BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Que: According to the data obtained for the last year, $a can buy a ‘b’ number of items....

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Elite Legendary Member
Posts: 3991
Joined: Fri Jul 24, 2015 2:28 am
Location: Las Vegas, USA
Thanked: 19 times
Followed by:37 members

Que: According to the data obtained for the last year, $a can buy a ‘b’ number of items....

by Max@Math Revolution » Wed Feb 03, 2021 10:41 pm

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

Que: According to the data obtained for the last year, $a can buy a ‘b’ number of items. If the average cost of each item increased by 30 percent and also 'b' items can be bought this year, then the number of items can be bought with $8a equals

(A) 4.8b
(B) 2.4b
(C) 6.15b
(D) 8b
(E) 5.50b
Top
Source: — Problem Solving |
User avatar
Elite Legendary Member
Posts: 3991
Joined: Fri Jul 24, 2015 2:28 am
Location: Las Vegas, USA
Thanked: 19 times
Followed by:37 members

Re: Que: According to the data obtained for the last year, $a can buy a ‘b’ number of items....

by Max@Math Revolution » Fri Feb 05, 2021 10:05 pm
Solution: Cost of b items = $a

Since the cost increases by 30%, the new cost of b items = \(\frac{130}{100}\) * $a = $\(\frac{13a}{10}\)

Thus, with a budget of $\(\frac{13a}{10}\), b items can be bought this year. Thus, with the budget of $8q, the numbers of items that can be bought

=> $\(\frac{8ab}{\frac{13a}{10}}\) (Since $\(\frac{13a}{10}\):b = $8a:x, we get x = \(\frac{8ab}{\frac{13a}{10}}\) = 6.15b

Therefore, C is the correct answer.

Answer C
Top
Post new topic Post Reply
• Page 1 of 1