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Question
Samantha buys 12 m and 45 cm of ribbon to decorate a gift box. But the ribbon was short by 78 cm. What is the required length of ribbon for the gift box?
Samantha buys 12 m and 45 cm of ribbon to decorate a gift box. But the ribbon was short by 78 cm. What is the required length of ribbon for the gift box?
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Solution
The correct option is D 13 m 23 cm
Length of ribbon purchased by Samantha = 12 m 45 cm
Length of ribbon that remained short = 78 cm
Total length of ribbon required = 12 m 45 cm + 78 cm
= (12 × 100 cm) + 45 cm + 78 cm
= 1200 m + 45 cm + 78 cm
= 1323 cm
= 1300 cm + 23 cm
= (13 × 100 cm) + 23 cm
= 13 m 23 cm
Length of ribbon purchased by Samantha = 12 m 45 cm
Length of ribbon that remained short = 78 cm
Total length of ribbon required = 12 m 45 cm + 78 cm
= (12 × 100 cm) + 45 cm + 78 cm
= 1200 m + 45 cm + 78 cm
= 1323 cm
= 1300 cm + 23 cm
= (13 × 100 cm) + 23 cm
= 13 m 23 cm
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