Aptitude Reasoning English GK Computer Knowledge Programming Skill Banking Software Testing

Question

In a marriage, a 30-liter lassi mixture of water and curd contains 5% curd. How much curd must be added to make 10% curd in the mixture?

  • 2
  • 1.8
  • 1.6
  • 1.4
Answer- B

The mixture has 5% curd, so the water would be 95% of 30 litres.

water = 95/100 * 30 = 28.5 liters

curd = 30 - 28.5 = 2.5 liters

Let curd to be added = x liters

Now, 2.5+x/30+x * 100 = 10

2.5+x/30+x = 1/10

25 + 10x = 30+x

5 = 9x

x = 1.8 liters