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Question

# Each packet of large cookies weighs 25oz and each small packet of cookies weighs 38oz. What is the total weight of 1 large packet of cookies and 1 small packet of cookies?

A
3140 oz
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B
3240 oz
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C
58 oz
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Solution

## The correct option is A 3140 ozWeight of large packet of cookies = 25oz Weight of small packet of cookies = 38oz Total weight of the cookies = 25+38 As these are unlike fractions, let's convert them into the like fractions by finding LCM of denominators 5 and 8. Multiple of 5: 5, 10, 15, 20, 25, 30, 35, 40 .. Multiple of 8: 8, 16, 24, 32, 40 ... ∴ LCM (5, 8) = 40 Now covert the denominators of each fractions into 40 (LCM of 5 and 8) Multiplying the fraction 25 with 8, we get: 25=8×28×5=1640 Multiplying the fraction 38 with 5, we get: 38=5×35×8=1540 Now, add the two fractions Total weight of the cookies =25+38=1640+1540=16+1540=3140 Hence, total weight of the cookies is 3140oz.

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