Question

Tina had $20m5cm$ long cloth. She cuts $4m50cm$ length of cloth from this for making a curtain. How much cloth is left with her?

Answer 1

Finding the length of cloth left:

Total length of cloth $=20m5cm$

$$\begin{gathered} =20\times 100+5(1m=100cm) \\ =2000+5 \\ =2005cm \end{gathered}$$

Length of cloth used to make the curtain $=4m50cm$

$$\begin{gathered} =4\times 100+50(1m=100cm) \\ =400+50 \\ =450cm \end{gathered}$$

Therefore, the length of cloth left with Tina will be $=\mathrm{Total}\mathrm{length}\mathrm{of}\mathrm{cloth}-\mathrm{Length}\mathrm{of}\mathrm{cloth}\mathrm{used}\mathrm{in}\mathrm{curtain}$

$$\begin{gathered} =2005-450 \\ =1555cm \\ =15.55m\left(1cm=\frac{1}{100}m\right) \end{gathered}$$

Hence, the length of cloth left with Tina is $15.55m$