what is the solution to this problem?

Question

A grocery store flyer has red grapes 5 lbs. for $5.50. How much would you pay for 7 lbs. of red grapes?



Answer 1

Hi,

A grocery store flyer has red grapes 5 lbs. for $5.50. How much would you pay for 7 lbs. of red grapes?

This is a ratio problem.

Given: grapes 5 lbs. for $5.50

Find: Cost for 7lbs of grapes

You can set this up as equivalent ratios

Let x = amount you would pay

Cost / Grapes = Cost / Grapes

$5.50 / 5 lbs = x / 7 lbs

You can cross multiply to solve

($5.50)(7 lbs) = x(5 lbs)

$38.50*lbs = x(5 lbs)

x = $7.70