@ 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
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