Direct and Inverse Proportion

If x and y are inversely proportional, find the values of X1​,X2​ and Y1​,Y2​ in the table given below:

• X1​=20

  X2​=40

  Y1​=10

  Y2​=0.1

• X1​=20

  X2​=30

  Y1​=10

  Y2​=1

• X1​=20

  X2​=40

  Y1​=10

  Y2​=1

• X1​=20

  X2​=40

  Y1​=20

  Y2​=1

If y varies inversely as x, and y=9 when x=2, find y when x=3. 

• y=5

• y=6

• x=6

• y=7

• x=4

How many men must be engaged to do a piece of work in 16 days which 24 men can do in 40 days ?

• 60 men can do the work in 15 days

• 60 men can do the work in 14 days

• 66 men can do the work in 16 days

• 60 men can do the work in 16 days

A fist with a mass of 3 kg causes a fishing pole to bend 9 cm. If the amount of bending varies directly as the mass, how much will the pole bend for a 2 kg fish ? 

• 6m

• 6cm

• 6mm

• 7cm

• 8cm

A boy runs 1km in 10 minutes. How long will it take to run 600m?

• 3 minutes

• 4 minutes

• 5 minutes

• 6 minutes

• 7 minutes

If 15 workers can build a wall in 48 hours, how many workers will be required to do the same work in 30 hours?

• 24 workers

• 23 workers

• 22 workers

• 25 workers

Mansukhbhai distributes some kg of grains among 150 persons then each would get 7 kg grains, whereas Jitubhai distributes same kg of grains among 210 persons, then how much amount(in kg) of grains each would get?

• 2kg

• 3kg

• 4kg

• 5kg

• 6kg

Which of the following is an example of inverse proportion?

• Number of mangoes in a bag and the weight of bag

• Earnings and hours worked

• More the speed, lesser the time taken

• None of these

3600 litre water is needed to fill up six tanks of equal sizes, then with 8400 litre water how many such tanks are needed?

• 13

• 13.5

• 14

• 14.5

• 15

Four boxes of equal sizes contain 240 soaps, then in such three boxes how many soaps are there?

• 160

• 170

• 180

• 190