#21
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@ ayesha ! thanks alot , also solve this one if you can
A & B can finish a piece of work in 30 days. B and c in 40 days,while c and a in 60 days . how long will they take to finish it together a- 26 2/3 days(26 whole 2 by 3) b- 25 days c- 14 days d - 16 days @ bear! thanks bro.... inshallah i will buy it very soon. thnks again for ur response |
#22
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@ Ayesha Mahmood thanks for solving and correcting the wrong ones
@ yasirzeb2006 bro the remaining 3 are here and plz see this link too http://way2freshers.com/aptitude/apt...-and-work.html 1---- A & B can finish a piece of work in 30 days. B and c in 40 days,while c and a in 60 days . how long will they take to finish it together a- 26 2/3 days(26 whole 2 by 3) b- 25 days c- 14 days d - 16 days 2--- x and y together can do a piece of work in 6 days and x alone can do it in 9 days. y alne will do it in ? a- 10 1/2 days b- 18 days c-12 days d- 7 1/2 days e- 20 days 3--- 15 women can reap the field in 30 days . when should 5 women leave the work , if the whole field is to reaped in 22 1/2 (22 and half)days after they leave the work??? a- 2 days b- 30 days c - 7 days d- 15 days e -25 days |
#23
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@ bear 1---- A & B can finish a piece of work in 30 days. B and c in 40 days,while c and a in 60 days . how long will they take to finish it together
a- 26 2/3 days(26 whole 2 by 3) b- 25 days c- 14 days d - 16 days while solving this why u multiplied 2 2(1/A+1/B+1/C) ???????
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#24
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Quote:
you'll have 1/a, 1/b, 1/c two times so you take 2 common |
The Following User Says Thank You to Ayesha Mahmood For This Useful Post: | ||
yasirzeb2006 (Tuesday, September 28, 2010) |
#25
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plz solve these questions and also xplain d solution...
plz solve these questions and also xplain d solution...THanks in advance
Q.1 Ali is 67.His son rehan is 29.In How many years will rehan be exactly half his father’s age? Q.2 Of d 20 ppl who won prize money, 7 have come forward to claim their winnings. what percent of the ppl have not yet appeared? Q.3 If the result obtained by multiplying a num, x, by a num 1 less than itself is 4 less than multiplying x by itself, then x=? Q.4 If 3m<48 and 2m>24 than m will be equal to? Q.5 what single discount is equivalent to two successive discounts of 10% and 15%?
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#26
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Q.1 Ali is 67.His son rehan is 29.In How many years will rehan be exactly half his father’s age?
Ans: Difference in ages = 38 years so when Ali will be 38 + 38 = 76 years old his son rehan will be 38 years old which is half the age of rehan. hence after 38-29 = 9 years Rehan will be exactly half his father's age. Q.2 Of d 20 ppl who won prize money, 7 have come forward to claim their winnings. what percent of the ppl have not yet appeared? Ans: Total no. of people not yet appeared = 20 - 7 = 13 Percentage of people not yet appeared = no. of people not appered * 100 / total no. of people = 13 * 100/ 20 = 80% Q.3 If the result obtained by multiplying a num, x, by a num 1 less than itself is 4 less than multiplying x by itself, then x=? Ans: by given condition product of x and x-1 is 4 less than x^2 so we get x(x-1)+4 = x^2 => x^2 - x + 4 - x^2 = 0 =>x = 4 Q.4 If 3m<48 and 2m>24 than m will be equal to? Ans; 3m<48 => m<16 and 2m>24 => m>12 or 12<m so 12<m<16 so if m is an integer then m = 13, 14 or 15 otherwise m lies in the interval (12,16) Q.5 what single discount is equivalent to two successive discounts of 10% and 15%? Ans: let total price = x then 10% of x = 0.1x so price will be = 0.9x and 15% more discount on it will be = 15/100 * 0.9x =0.135x so price will be = 0.9x - 0.135x = 0.865x so total discount is = 0.235x = 23.5 % x thus a single discount of 23.5% is equal to two successive discounts of 10% and 15%. |
The Following 2 Users Say Thank You to Ayesha Mahmood For This Useful Post: | ||
New Student (Tuesday, October 12, 2010), sibgakhan (Tuesday, October 12, 2010) |
#27
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Quote:
according to book the CORRECT ans of the above questions are..... Q.2 65% Q3. 3 Q4. 10 Q5. 24.5% i dount know how the ans comes but these are the correct ans given at the end of chapter.
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#28
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ayesha is correct in all except Q2 where there is a miscalculation but her procedure is correct
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The Following 2 Users Say Thank You to bear For This Useful Post: | ||
Ayesha Mahmood (Wednesday, October 13, 2010), sibgakhan (Wednesday, October 13, 2010) |
#29
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plz solve these questions and also xplain d solution...
Question 1
Solve the two sided inequality and show the solution on real line 7 < 1-2x ≤ 10 Question 2 Given two functions as: f(x) = and g(x) = Find fog(x) also find the domain of f, g and fog Question 3 Simplify, then apply the rules of limit to evaluate lim x->3 x3(power3)-5x2(power2)+6x/x2(power2)-9
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Aalam-e-soz o saz main, wasl se barh ker hai firaaq Hijr me lazt-e-talb, wasl main marg-e-arzoo...!!! Last edited by sibgakhan; Friday, October 29, 2010 at 07:44 PM. |
#30
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...
here are the values
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Aalam-e-soz o saz main, wasl se barh ker hai firaaq Hijr me lazt-e-talb, wasl main marg-e-arzoo...!!! |
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