Question

Shubhangi has twice as many 20-rupee notes as she has 50-rupee notes. Altogether, she has 2700 rupees. How many 50-rupee notes does she have?

Answer 1

Let the number of 50-rupee notes = x

Then, the number of 20-rupee notes = 2 × number of 50-rupee notes = 2x

Amount of 50-rupee notes = Rs (50 × x) = Rs 50x

Amount of 20-rupee notes = Rs (20 × 2x) = Rs 40x

It is given that the total amount is Rs 2700.

∴ 50x + 40x = 2700

⇒ 90x = 2700

⇒ x = `2700/90`

⇒ x = 30

Number of 50-rupee notes = x = 30

Number of 20-rupee notes = 2x

= 2 × 30

= 60

∴ Shubhangi has 30 notes of 50 rupees.