Explanation:
1kg of grapes = $1.50
=> 3.5kg of grapes = $1.50 * 3.5 = $5.25
1kg of carrots = $1.00
=> 2.25kg of carrots = $1.00 * 2.25 = $2.25
Total cost = $5.25 + $2.25 = $7.50.
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