Ex 1.2, 9 To stitch a shirt, 2 m 15 cm cloth is needed. Out of 40 m cloth, how many shirts can be stitched and how much cloth will remain?Length of cloth needed for stitching 1 Shirt
= 2 m 15 cm
= 2 m + 15 cm
= 2 × 1 m + 15 cm
= 2 × 100 cm + 15 cm
= 200 cm + 15 cm
= 215 cm
Total length of cloth available = 40 m
= 40 × 100 cm
= 4000 cm
Total number of shirts can be made from available cloth
= Total length of cloth available ÷ Length of cloth needed for 1 shirt
= 4000 ÷ 215
Quotient = 18
Remainder = 130
Therefore,
Number of shirts that can be made = 18
and
Remaining cloth = 130cm
= 100cm + 30cm
= 1m 30cm

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Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.