Question

Vedika has 23.50 metres of cloth. She used it to make 5 curtains of equal size. If each curtain required 4 metres 25 cm to make, how much cloth is left over?

Answer 1

We know, that 1 m = 100 cm

Length of cloth required to make each curtain = 4 m 25 cm

= 4m + `25/100` m           

= 4 m + 0.25 m

= 4.25 m

Length of cloth required to make 5 curtains = Length of cloth required to make each curtain × 5

= 4.25 m × 5

= `425/100xx5/1`

= `(425xx5)/(100xx1)`

= `2125/100`

= 21.25 m

∴ Amount of cloth left = Total length of the cloth − Length of cloth required to make 5 curtains

= 23.50 m − 21.25 m

= 2.25 m

         410
    23.5 0
− 21.2 5  
     2.2 5  

Thus, the length of the cloth leftover is 2.25 m.