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# Question 1.Which of the following statements is of inverse variation?(1) The number of workers on a job and time taken by them to complete the job.(2) The number of pipes of the same size to fill a tank and the time taken by them to fill the tank.(3) Petrol filled in the tank of a vehicle and its cost.(4) Area of the circle and its radius.Answer:(1) Yes, it is of inverse variation because more the number of workers will be lesser time will be taken.(2) Yes, it is of inverse variation because more the number of pipes will be lesser time will be taken.(3) No, it is not of inverse variation because the cost of petrol will increase with respect to its quantity.(4) No, it is not of inverse variation because a larger circle has a longer radius.Question 2.If 15 workers can build a wall in 48 hours, how many workers will be required to do the same work in 30 hours?Answer:The number of workers building a wall and time taken by them is inversely proportional.Let x be the number of workers and y be the time taken. (k is constant) (1)Number of workers given=15Time took =48 hrs(Put in 1)Wall has to be built in 30 hoursSo, (Put in 1) (Since)So, 24 workers are needed to build the wall in 30 hours.Question 3.120 bags of half liter milk can be filled by a machine within 3 minutes find the time to fill such 1800 bags?Answer:Number of bags will be directly proportional to the time taken because as the number of bags increases, time to fill them also increases.Number of bags0Time is taken to fill (k=constant) (1)Number of bagsLet time taken to fill them be x (From 1)So, 45 minutes are needed to fill 1800 bags.Question 4.A car with a speed of 60 km/hr takes 8 hours to travel some distance. What should be the increase in the speed if the same distance is to be covered in  hours?Answer:Speed of car and time will be inversely proportional because as the speed increases, time for the journey decreases.Speed of carTime  (k=constant) (1)Time for which distance is to be coveredLet increase in speedFrom 1So, speed should be increased by 4 km/hr.

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2019 Board Paper Solution

HSC ENGLISH SET A 2019 21st February, 2019

HSC ENGLISH SET B 2019 21st February, 2019

HSC ENGLISH SET C 2019 21st February, 2019

HSC ENGLISH SET D 2019 21st February, 2019

SECRETARIAL PRACTICE (S.P) 2019 25th February, 2019

HSC XII PHYSICS 2019 25th February, 2019

CHEMISTRY XII HSC SOLUTION 27th, February, 2019

OCM PAPER SOLUTION 2019 27th, February, 2019

HSC MATHS PAPER SOLUTION COMMERCE, 2nd March, 2019

HSC MATHS PAPER SOLUTION SCIENCE 2nd, March, 2019

SSC ENGLISH STD 10 5TH MARCH, 2019.

HSC XII ACCOUNTS 2019 6th March, 2019

HSC XII BIOLOGY 2019 6TH March, 2019

HSC XII ECONOMICS 9Th March 2019

SSC Maths I March 2019 Solution 10th Standard11th, March, 2019

SSC MATHS II MARCH 2019 SOLUTION 10TH STD.13th March, 2019

SSC SCIENCE I MARCH 2019 SOLUTION 10TH STD. 15th March, 2019.

SSC SCIENCE II MARCH 2019 SOLUTION 10TH STD. 18th March, 2019.

SSC SOCIAL SCIENCE I MARCH 2019 SOLUTION20th March, 2019

SSC SOCIAL SCIENCE II MARCH 2019 SOLUTION, 22nd March, 2019

XII CBSE - BOARD - MARCH - 2019 ENGLISH - QP + SOLUTIONS, 2nd March, 2019

HSC Maharashtra Board Papers 2020

(Std 12th English Medium)

HSC ECONOMICS MARCH 2020

HSC OCM MARCH 2020

HSC ACCOUNTS MARCH 2020

HSC S.P. MARCH 2020

HSC ENGLISH MARCH 2020

HSC HINDI MARCH 2020

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SSC Maharashtra Board Papers 2020

(Std 10th English Medium)

English MARCH 2020

HindI MARCH 2020

Hindi (Composite) MARCH 2020

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Mathematics (Paper 1) MARCH 2020

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