MP Board Class 6th Maths Solutions Chapter 12 Ratio and Proportion Ex 12.3

October 31, 2021

Question 1.
If the cost of 7 m of cloth is Rs. 294, find the cost of 5 m of cloth.
Solution:
Cost of 7 m of cloth = Rs. 294
∴ Cost of 1 m of cloth = Rs. 294/7 = Rs. 42
∴ Cost of 5 m of cloth = Rs. 42 × 5 = Rs. 210
Thus, the cost of 5 m of cloth is Rs. 210.

Question 2.
Ekta earns Rs. 1500 in 10 days. How much will she earn in 30 days?
Solution:
Earning of 10 days = Rs. 1500
∴ Earning of 1 day = Rs. 1500/10 = Rs.150
∴ Earning of 30 days = Rs. 150 × 30 = Rs. 4500
Thus, the earning of 30 days is Rs. 4,500.

Question 3.
If it has rained 276 mm in the last 3 days, how many cm of rain will fall in one full week (7 days)? Assume that the rain continues to fall at the same rate.
Solution:
Rain fall in 3 days = 276 mm 276
∴ Rain fall in 1 day = 276/3 mm = 92 mm
∴ Rain fall in 7 days = 92 × 7 mm = 644 mm
Thus, the rain fall in one full week is 644 mm.

Question 4.
Cost of 5 kg of wheat is Rs. 30.50.
(a) What will be the cost of 8 kg of wheat?
(b) What quantity of wheat can be purchased in Rs. 61?
Solution:

Question 5.
The temperature dropped 15 degree Celsius in the last 30 days. If the rate of temperature drop remains the same, how many degrees will the temperature drop in the next ten days?
Solution:

Thus, 5 degree Celsius temperature will drop in next 10 days.

Question 6.
Shaina pays Rs. 7500 as rent for 3 months. How much does she has to pay for a whole year, if the rent per month remains same?
Solution:

Question 7.
Cost of 4 dozens bananas is Rs. 60. How many bananas can be purchased for Rs. 12.50?
Solution:

Question 8.
The weight of 72 books is 9 kg. What is the weight of 40 such books?
Solution:

Question 9.
A truck requires 108 litres of diesel for covering a distance of 594 km. How much diesel will be required by the truck to cover a distance of 1650 km?
Solution:

Thus, 300 litres of diesel will be required by the truck to cover a distance of 1650 km.