Bunuel wrote:
On a z day hiking trip, 4 children consumed food costing x dollars. For the same food costs per child per day, what would be the total cost of food consumed by 7 children during a 5 day hiking trip in terms of x and z?
A. 4z/(35x)
B. 140z/x
C. 140x/z
D. 28x/(5z)
E. 35x/(4z)
For z days , total cost for 4 children =x;
For 1 day per child , cost = x/4z;
For 7 children ,cost of food for 5 days = 5*7* x/4z= 35x/4z;
Ans:E
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