Question

At a grocery store, the price of 4 cans of tuna is $3.88.

At this rate, how much would 7 cans of tuna cost?

A) $6.79
B) $6.88
C) $7.21
D) $7.76​

Answer 1

A. 6.79

Explanation:

4/3.88= 0.97 per can

0.97*7=6.79

Answer 2

Option A: $6.79 is the correct answer.

Explanation:

Given that:

Cost of 4 cans of tuna = $3.88

Cost of 7 cans of tuna is to be find.

We will find the unit rate.

Unit rate =
`(Cost\ of\ cans)/(Number\ of\ cans)`

Unit rate =
`(3.88)/(4)`

Unit rate = $0.97 per can

Cost of 7 cans = 7*0.97

Cost of 7 cans = $6.79

Hence,

Option A: $6.79 is the correct answer.