. The only contents of a parcel are 25 photographs and 30 negatives. What is the total weight, in ounces, of the parcel’s contents?
(1) The weight of each photograph is 3 times the weight of each negative.
(2) The total weight of 1 of the photographs and 2 of the negatives is ounce.
weight
This topic has expert replies
-
- Master | Next Rank: 500 Posts
- Posts: 164
- Joined: Wed Jun 11, 2008 6:34 pm
- Location: Bangalore
- GMAT Score:590
My choice is C.
1) INSUFFICIENT . We dont know the individual weight.
2) INSUFFICIENT .The photographs n negatives are not in the ratio 1:2
when combining 1 and 2, it is Sufficient.
Let P be the weight of photograph
and N be the weight of negative.
From 1, we know P = 3N
as per 2, P+2N = 1 ounce.
ie. P+2/3 P = 1.
i.e. P = 3/5 ounce.
and weight one Negative = 1/5 ounce.
This is sufficient to find out 25P+30N
1) INSUFFICIENT . We dont know the individual weight.
2) INSUFFICIENT .The photographs n negatives are not in the ratio 1:2
when combining 1 and 2, it is Sufficient.
Let P be the weight of photograph
and N be the weight of negative.
From 1, we know P = 3N
as per 2, P+2N = 1 ounce.
ie. P+2/3 P = 1.
i.e. P = 3/5 ounce.
and weight one Negative = 1/5 ounce.
This is sufficient to find out 25P+30N