RD Sharma Class 7 Maths Chapter 10

How much would 50 meters of cloth cost if 40 meters costs Rs 200?

What is the cost of 1 chocolate if 20 chocolates cost Rs 320?

What distance can a car travel on 14 litres of petrol if it covers 522 km on 36 litres?

If it costs Rs 280 to travel 900 km by rail, what is the fare for a 360 km journey?

How long will the pipe take to fill 4 oil tankers if it takes 4(1/2) hours to fill 6?

If 3/4 of the salary per month is Rs 600, what is the total salary per month?

If the cost of 32 tables is Rs 23520, how many tables can be purchased for Rs 51450?

If the yield of wheat from 6 hectares is 280 quintals, what is the yield per hectare?

How many hectares are required for a yield of 225 quintals?

What is the cost of 36 post cards given that 15 post cards cost Rs 2.25?

If a purchase worth Rs 60 incurs a sales tax of Rs 4.20, what will be the sales tax on a Rs 150 purchase?

What will be the cost of a 120 km rail journey if a 75 km journey costs Rs 215?

How many post cards can be bought with Rs 45 if 15 post cards cost Rs 2.25?

What is the total number of pencils in 65 packets, each containing 10 pencils?

What is the cost of 1 pencil if 52 packets of 12 pencils cost Rs 499.20?

If the cost of 1 km of a rail journey is determined from Rs 215 for 75 km, what is the cost for 1 km?

Cost of Chocolates:
- 20 chocolates cost Rs 320.
- Cost of 1 chocolate = Rs 16.
- Cost of 35 chocolates = Rs 560.
Cost of Cloth:
- 40 meters of cloth cost Rs 200.
- Cost of 1 meter = Rs 5.
- Cost of 50 meters = Rs 250.
Car Mileage:
- Car covers 522 km using 36 litres of petrol.
- Distance per litre = 14.5 km.
- Distance with 14 litres = 203 km.
Rail Fare:
- Cost for 900 km by rail = Rs 280.
- Cost per km = Rs 0.3111.
- Fare for 360 km = Rs 112.
Filling Oil Tankers:
- 6 oil tankers filled in 4.5 hours.
- Time for 1 tanker = 1.5 hours.
- Time to fill 4 tankers = 3 hours.
Salary Calculation:
- 3/4 of salary = Rs 600.
- Full salary = Rs 800.
Cost of Tables:
- 32 tables cost Rs 23520.
- Cost per table = Rs 735.
- Number of tables for Rs 51450 = 70.
Wheat Yield:
- 6 hectares yield 280 quintals.
- Hectares required for 225 quintals = 4.23 hectares.
Postcard Costs:
- 15 postcards cost Rs 2.25.
- Cost of 36 postcards = Rs 5.40.
- Number of postcards for Rs 45 = 300.
Rail Journey Cost:
- 75 km journey costs Rs 215.
- Cost for 120 km = Rs 344.
Sales Tax Calculation:
- Sales tax on Rs 60 = Rs 4.20.
- Sales tax on Rs 150 = Rs 10.50.
Pencil Cost:
- 52 packets of 12 pencils = 624 pencils total, costing Rs 499.20.
- Cost per pencil = Rs 0.7992.
- Cost of 650 pencils from 65 packets of 10 = Rs 520.