7.5 lb of walnuts will cost $34.50
The first step is to calculate the price of 1 lbs of walnut
$3.45= 3/4 lb
x= 1 lb
cross multiply
3.45 × 1= 3/4x
3.45= 0.75x
x= 3.45/0.75
x= 4.6
Therefore it will take $4.6 to make 1 lb
The next step is to calculate the cost of 7.5 lbs of walnuts
4.6= 1
x= 7.5
Cross multiply
x= 4.6 × 7.5
= $34.5
Hence 7.5 lb of walnuts will cost $34.50
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