Kaplan GMAT Course Book '06-'07 -Question 11- Pg 429- Topical Math Tests.
Here's the question:
Data Sufficiency:
How many nickels does Bill have?
(1): Bill has a total of 17 nickels and dimes.
(2): Bill has $1.30
My answer- C Both 1 and 2 together are sufficient to answer the question
Book answer- E 1 and 2 together are NOT sufficient to answer the question.
My Calculation:
x= nickels y= dimes
x+y= 17
0.05x + 0.10y= 1.30
0.05x+ 0.10 (17-x) = 1.30
X= 8 y=9
Since both are linear equations, they would at most intersect once...so this should be the only answer.
Please confirm that the book answer is wrong. Thx
Here's the question:
Data Sufficiency:
How many nickels does Bill have?
(1): Bill has a total of 17 nickels and dimes.
(2): Bill has $1.30
My answer- C Both 1 and 2 together are sufficient to answer the question
Book answer- E 1 and 2 together are NOT sufficient to answer the question.
My Calculation:
x= nickels y= dimes
x+y= 17
0.05x + 0.10y= 1.30
0.05x+ 0.10 (17-x) = 1.30
X= 8 y=9
Since both are linear equations, they would at most intersect once...so this should be the only answer.
Please confirm that the book answer is wrong. Thx
