Presentation on theme: "Direct And Inverse Proportion. INVERSE PROPORTION 1. If 5 men can reap a field in 20 days, in how many days will 15 men reap the field? 2. If 32 men can."— Presentation transcript:
Direct And Inverse Proportion
INVERSE PROPORTION 1. If 5 men can reap a field in 20 days, in how many days will 15 men reap the field? 2. If 32 men can reap a field in 15 days, in how many days can 20 men reap the same field? men can dig a pond in 8 days. How many men can dig it in 6 days? 4. A man pays $ men earn $ 8400 per week. What will be the earning per week of 9 men? 5. I t takes 4 men 6 hours to repair a road. How long will it take 7 men to do the job if they work at the same rate?
6. A car takes 5 hours to complete a journey if it moves with a speed of 90 km/hr. How long will it take when the car travels at a speed of 75 km/hr? 7. A train moves at a speed of 110 km/hr and covers a certain distance in 9.6 hours. What should be the speed of the train to cover the same distance in 8 hours? men can paint the wall in 8 hours. How many men will paint the wall in 6 hours? 9. If 24 horses can graze a field in 10 days. Then how many horses will graze the same field in 15 days. 10. If 30 laborers working can finish a piece of work in 18 days, how many laborers working can finish it in 45 days?
DIRECT PROPORTION 1. A labor get $980 for 14 days work. How many days should he work to get $2100? 2. A car travels 360 km in 60 liters of petrol. How much distance will it cover in 12 liters of petrol? 3. 8 potters can make 96 pots in 4 days. How many potters will be needed to make 108 pots in 4 days? 4. There are 124 students in the hostel. Food provision for them is for 28 days. How many students are there if it lasted 16 days?
These are the ingredients needed for making 18 chocolate chip cookies: 9 ounces of flour 6 ounces of sugar 6 ounces of margarine 8 ounces of chocolate chips 2 large eggs 5. Justin wants to make 12 chocolate chip cookies. How much of sugar will he need? 6. Ali has 9 ounces of margarine, but plenty of all the other ingredients. What is the greatest number of chocolate chip cookies she can make? 7. Kitchen flooring is sold at $8.00 per square foot. Find the cost for 25 square feet. (a) $200 (b) $250 (c) $320