In a piggy bank filled with only pennies, nickels, and dimes, what is

The bigger problem with this question was..what is the value of nickel,pennies or dimes...
Let there be p pennies, n nickels and d dimes so we need to find p:d

St 1...Does not tell us anything about pennies... Clearly not sufficient..Option A and D ruled out
St 2 says, $7 in piggy bank...Multiple combinations possible with different ratio of p:d..not sufficient Option B ruled out

Now combining we get $7 and ratio of n:d as 3:2...again...there can be many combination possible to get 7$ in piggy bank..

Ans is E
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1 - N : D = 2/3 - Not sufficient to find the ratio of the three
2 - total 7$ - Not sufficient to find the ratio of the three

Combining 1 & 2 -> N : D = 2 : 3, N + D + P = 7 = Various combinations possible.

Thus E

I dont think GMAT will ask such question. The Value of Nickel, Penny, and dime is not known to non natives. ( Except few:))

Official answer from Manhattan Prep.

The question asks us to solve for the ratio of pennies (p) to dimes (d).

(1) INSUFFICIENT:  This tells us that the ratio of nickels (n) to dimes (d) is 3:2. This gives us no information about the ratio of pennies to dimes.

(2) INSUFFICIENT: This tells us that there is $7, or 700 cents in the piggy bank. We can write an equation for this as follows, using the value of each type of coin: 10d + 5n + p = 700. This is not enough information for us to figure out the ratio of p to d.

(1) AND (2) INSUFFICIENT: Taken together, both statements still do not provide enough information for us to figure out the ratio of p to d. For example, there may be 3 nickels, 2 dimes, and 665 pennies in the piggy bank (this keeps the ratio of nickels to dimes at 3:2 and totals to $7). Alternatively, there may be 30 nickels, 20 dimes, and 350 pennies (this also keeps the ratio of nickels to dimes at 3:2 and totals to $7). In these 2 cases the ratio of pennies to dimes is not the same.

The correct answer is E.
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English is not also the native language to many. So... You decide.

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what's the conversion rate between dollars, cents, pennies, dimes. and nickels?

A penny is worth 1 cent. A nickel is worth 5 cents. A dime is worth 10 cents. A quarter is worth 25 cents.
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The question asks us to solve for the ratio of pennies (p) to dimes (d).
INSUFFICIENT: This tells us that the ratio of nickels (n) to dimes (d) is 3:2.
This gives us no information about the ratio of pennies to dimes.
INSUFFICIENT: This tells us that there is $7, or 700 cents in the piggy bank.
We can write an equation for this as follows, using the value of each type of
coin: 10d + 5n + p = 700. This is not enough information for us to figure out
the ratio of p to d.
(1) AND (2) INSUFFICIENT: Taken together, both statements still do not
provide enough information for us to figure out the ratio of p to d. For
example, there may be 3 nickels, 2 dimes, and 665 pennies in the piggy bank
(this keeps the ratio of nickels to dimes at 3:2 and totals to $7). Alternatively,
there may be 30 nickels, 20 dimes, and 350 pennies (this also keeps the ratio
of nickels to dimes at 3:2 and totals to $7). In these 2 cases the ratio of pennies
to dimes is not the same.
The correct answer is E.

Can this type of question even be expected on test day? Surely they can't expect non-americans to know what nickels, dimes or pennies are worth as easy as they may be to memorize.

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