Question

Yash has 10 rupee and 20 rupee notes. The number of 10 rupee notes is triple the number of 20 rupee notes. He had total 600 rupees. Then how many note of 20 rupees he had?​

Answer 1

Answer:

20rs notes is. = 12

Step-by-step explanation:

let 20rs notes be x

then 10rs notes be 3x

ACCORDING TO THE QUESTION :

20x + 10(3x) =600

20x +30x =600

50x = 600

x = 600/50

x = 12

Answer 2

Given:

Yash has 10 rupees and 20 rupee notes. The number of 10 rupee notes is triple the number of 20 rupee notes. Total rupees = 600.

To find:

The number of 20rupees notes Yash had.

Solution:

Let the number of 10 rupees notes be x and the number of 20 rupees notes be y.

So according to question, the number of 10 rupee notes is triple the number of 20 rupee notes. So,

x = 3y

or x - 3y = 0 (i)

Also, the sum of 10 and 20 rupees notes is total rupees i.e. 600. So,

10x + 20y = 600 (ii)

In equation (i), multiply 10 both sides

10x - 30y = 0 (iii)

On subtracting (ii) from (iii) we have,

50y = 600

y = 12

As y is the number of 20 rupees note, hence

Yash had 12 notes of 20rupees.