Price of each sandwich=x
Price of each soda=y
2x+3y=?
stmt1,
x+y=3
There can be many values possible for x and y.
Insuff
stmt2,
3x+2y=8
There can be many values possible for x and y.
Insuff
combining 1 and 2,
x+y=3
3x+2y=8
From above 2 equations,we can solve x and y.
Suff
Pick C
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Source: Beat The GMAT — Data Sufficiency |
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tpr-becky
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This is a typical two equations two variable question - you are asked for the value of a formula involving the price of 2 sandwiches and 1 soda.
1) give you a formula for 1 of each but this can't be manipulated to look like our original formul and it has two varibles wiht only one equation. Therefore it is insufficient. BCE
2) Similar to above, can't be manipulated to look like our stem formula and has two variables so it is insufficient. CE
together you have two equations and two variables, the equations are not multiples and do not contain exponents. Therefore they will be enough to solve and your answer is C.
1) give you a formula for 1 of each but this can't be manipulated to look like our original formul and it has two varibles wiht only one equation. Therefore it is insufficient. BCE
2) Similar to above, can't be manipulated to look like our stem formula and has two variables so it is insufficient. CE
together you have two equations and two variables, the equations are not multiples and do not contain exponents. Therefore they will be enough to solve and your answer is C.
Becky
Master GMAT Instructor
The Princeton Review
Irvine, CA
Master GMAT Instructor
The Princeton Review
Irvine, CA
