DRDO Multi tasking staff Model paper 2

If first discount is a% and 2nd discount is b% then, total discount = (a + b - ab/100)%
∴ total discount = (5+x−

5x

100

) % = 5 +

19x

29

%
∴ Price after total discount = amount paid by customer.
⇒ 2500 − 5+

19x

20

×

2500

100

= 2280 ⇒

100+19x

20

× 25 = 220
⇒ 100 + 19x = 220 ×

20

25

⇒ 19x = 176 − 100 ⇒ x = 4