Jesse bought 5.2 pounds of grapes for $7.75. Using the unit rate, how much would 3 pounds of grapes cost?

1 Answer
Don't Memorise
Jun 19, 2016

The cost of #3# pounds of grapes # =color(green)($4.47#

Explanation:

Cost of #5.2# pounds of grapes #= $ 7.75#

Cost of #1 # pound # = 7.75/5.2 = color(blue)( $1.49# (rounding off to the nearest #100#)

So, now we can calculate the cost of #3# pounds of grapes:
#= color(blue)(1.49) xx 3 = $4.47#

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