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 CSS Forums Please this Mathematics Problem related to %

#1
Friday, August 09, 2019
 Junior Member Join Date: Jul 2018 Location: Lahore Posts: 16 Thanks: 13 Thanked 0 Times in 0 Posts
Please this Mathematics Problem related to %

1 kg of tea and 4 kg of sugar cost 35 but if sugar rises by 50% and tea by 10% they would cost 42.50. Find the price per kg of sugar.

Thank You.

#2
Friday, August 09, 2019
 Senior Member Join Date: Jun 2018 Posts: 239 Thanks: 116 Thanked 149 Times in 84 Posts

T: Price of 1 kg tea
S: Price of 1 kg sugar
4S: Price of 4 kg of sugar

T+4S = 35 — Eqn. A
T = 35 -4S

1.1T: Price of 1 kg tea after 10% increase
1.5S: Price of 1 kg sugar after 50% increase

1.1T + 4(1.5S) = 42.5
1.1T + 6S = 42.5 — Eqn.B

**Solve simultaneously Eqns. A and B

1.1(35-4S) + 6S = 42.5
38.5 -4.4S + 6S = 42.5
1.6S = 4
S = 4/1.6= 2.5

Old Price of 1 kg Sugar = 2.5
New Price of 1 kg Sugar = 2.5*1.5 = 3.75
 The Following User Says Thank You to Obaidd For This Useful Post: MaryN (Sunday, August 11, 2019)
#3
Tuesday, October 08, 2019
 Senior Member Join Date: Feb 2018 Location: Islamabad Pakistan Posts: 119 Thanks: 0 Thanked 6 Times in 6 Posts

this is be very helplul to solve methamical question for others ...
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