Question

But Kamla Bai was not happy, She had to spend Rs 85 every day on the cow. She made some money by selling the milk. But still, she wanted to sell the cow.

• If Kamla Bai spends Rs 85 a day, find out how much she will spend in one month.
• The cow gives 8 litres of milk every day. How much will it give in one month?
• If the milk is sold at Rs 9 per litre, how much money will Kamla Bai make in one month?

Answer 1

• Money spend by Kamla Bai on the cow in 1 day = Rs 85
  Number of days in 1 month = 30
  ∴ Money spend by Kamla Bai on the cow in 30 days
  = Rs 85 × 30
  = Rs 2,550
  Working:
     85
  × 30 
      00
  2550 
  2550
  Thus, Kamla Bai will spend Rs 2,550 on the cow in one month.

• Amount of milk given by the cow in 1 day = 8 litre
  ∴ Amount of milk given by the cow in 30 days
  = 30 × 8 litres
  = 240 litres
  Working:
    30
  × 8
  240
  Thus, the cow will give 240 litres of milk in one month.

• The selling price of one litre of milk = Rs 9
  We know that the cow gives 240 litres of milk in one month.
  ∴ The selling price of 240 litres of milk
  = 240 × Rs 9
  = Rs 2,160
  Working:
    240
    × 9
  2160
  Thus, Kamla Bai will earn Rs 2,160 by selling 240 litres of milk in one month.