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If Ann saves x dollars each week and Beth saves y dollars each week, what is the total amount that they save per week?

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by M7MBA » Sat Aug 01, 2020 6:07 am

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A

B

C

D

E

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If Ann saves x dollars each week and Beth saves y dollars each week, what is the total amount that they save per week?

(1) Beth saves $5 more per week than Ann saves per week.
(2) It takes Ann 6 weeks to save the same amount that Beth saves in 5 weeks.

[spoiler]OA=C[/spoiler]

Source: Official Guide
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Source: — Data Sufficiency |

So we need to find the x+y =??

From St 1, we have y=x+5 or Total savings ie. x+y= 2x+5----> Clearly not sufficient as x can have any value. So A and D ruled out
From St 2, we have 6 weeks of Ann savings equals Beth's savings of 5 weeks so we have 6x= 5y. So St 2 is not sufficient so B ruled out

Combining we get that 6x= 5y and y= x+5....
On Solving we get 6x/5= x+5 or 6x= 5x+25 or x=25 and y =30.

so x+y = $55.
OA: C
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