## Que: With the increase of 20% in the price of milk, a housewife can buy 5 liters less quantity for $60........... ##### This topic has expert replies Elite Legendary Member Posts: 3846 Joined: 24 Jul 2015 Location: Las Vegas, USA Thanked: 19 times Followed by:36 members ### Que: With the increase of 20% in the price of milk, a housewife can buy 5 liters less quantity for$60...........

by [email protected] Revolution » Thu Jan 28, 2021 11:56 pm

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Que: With the increase of 20% in the price of milk, a housewife can buy 5 liters less quantity for $60 than she was buying before the increase. What was the initial price per liter of milk? (A)$2.00
(B) $2.50 (C)$2.75
(D) $3.00 (E)$3.50 Math Revolution

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[Course] Starting $79 for on-demand and$60 for tutoring per hour and $390 only for Live Online. Email to : [email protected] Elite Legendary Member Posts: 3846 Joined: 24 Jul 2015 Location: Las Vegas, USA Thanked: 19 times Followed by:36 members ### Re: Que: With the increase of 20% in the price of milk, a housewife can buy 5 liters less quantity for$60...........

by [email protected] Revolution » Wed Feb 03, 2021 10:29 pm
Solution: The price of milk is increased by 20%.

Let the original price of milk per liter be $10. Increased price: $$\frac{120}{100}$$ *$10 = $12[/m] Number of liters of milk: $$\frac{Total\ price\ }{price\ per\ litre}$$ Number of liters of milk before increase: $$\frac{60}{10}$$=6 Number of liters of milk after increase: $$\frac{60}{12}$$=5 The difference in the quantity of milk obtained: 6 - 5 = 1 Thus, for the$10 initial price, the difference is 1 liter.

For 5 liters difference, $$\frac{10}{5}$$ = $2 Therefore, A is the correct answer. Answer A Math Revolution The World's Most "Complete" GMAT Math Course! Score an excellent Q49-51 just like 70% of our students. [Free] Full on-demand course (7 days) - 100 hours of video lessons, 490 lesson topics, and 2,000 questions. [Course] Starting$79 for on-demand and $60 for tutoring per hour and$390 only for Live Online.
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### Re: Que: With the increase of 20% in the price of milk, a housewife can buy 5 liters less quantity for $60........... by [email protected] » Fri Apr 16, 2021 8:22 am [email protected] Revolution wrote: Thu Jan 28, 2021 11:56 pm Que: With the increase of 20% in the price of milk, a housewife can buy 5 liters less quantity for$60 than she was buying before the increase. What was the initial price per liter of milk?

(A) $2.00 (B)$2.50
(C) $2.75 (D)$3.00
(E) \$3.50
Solution:

We can let p be the initial price per liter of the milk and create the equation:

60/(1.2p) = 60/p - 5

50/p = 60/p - 5

50 = 60 - 5p

5p = 10

p = 2