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If costs $3. 45 to buy 3/ 4 lb of chopped walnuts. How much would it cost to purchase 7. 5 lbs of walnuts?.

Sagot :

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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