Question

If a RS 100 note is 15cm long how long will a RS 20 cm note be?

Answer 1

The length of Rs 100 note = 15 cm

We have to determine the length of Rs 20 cm note.

We will use unitary method to determine the length of Rs 20 note.

We will first find the length of Re 1 note.

Since, the length of Rs 100 note = 15cm

The length of Re 1 note = $15 \div 100$ = 0.15 cm

So, the length of Rs 20 note = $20 \times 0.15$ = 3 cm

Therefore, the length of Rs 20 note is 3 cm.