IBPS Clerk Prelims Model Paper 16

Here, total weight of the mixture = 150 kg
Quantity of low quality weight
= 150×

10

100

= 15 kg
Now,

15

150+x

×100 = 5
or 1500 = 750 + 5x
or 1500 - 750 = 5x or x =

750

5

⇒ x = 150 kg
Alternate Method
When percentage value gets halved, then quantity of the mixture gets doubled.
∴ 150 × 2 = 300 kg, so 150 kg more wheat should be added.