Advertisements
Advertisements
Question
In case of inverse proportion, `a_2/- = b_2/-`
Solution
In case of inverse proportion, `a_2/underlinebb(a_1) = b_2/underlinebb(b_1)`
Explanation:
In inverse proportion,
⇒ `a_2/a_1 = b_2/b_1`
⇒ a2b1 = a1b2
APPEARS IN
RELATED QUESTIONS
Which of the following are in inverse proportion?
The number of workers on a job and the time to complete the job.
Rehman is making a wheel using spokes. He wants to fix equal spokes in such a way that the angles between any pair of consecutive spokes are equal. Help him by completing the following table:
Number of spokes | 4 | 6 | 8 | 10 | 12 |
Angle between a pair of consecutive spokes |
90° | 60° | ... | ... | ... |
- Are the number of spokes and the angles formed between the pairs of consecutive spokes in inverse proportion?
- Calculate the angle between a pair of consecutive spokes on a wheel with 15 spokes.
- How many spokes would be needed if the angle between a pair of consecutive spokes is 40°?
Find the constant of variation from the table given below:
x | 3 | 5 | 7 | 9 |
y | 12 | 20 | 28 | 36 |
Set up a table and solve the following problems. Use unitary method to verify the answer.
Raghu has enough money to buy 75 machines worth Rs 200 each. How many machines can he buy if he gets a discount of Rs 50 on each machine?
If x and y vary inversely as other and x = 30, find y when constant of variation = 900.
Three persons can build a small house in 8 days. To build the same house in 6 days, how many persons are required?
The stock of grain in a government warehouse lasts 30 days for 4000 people. How many days will it last for 6000 people?
In a school there is 7 periods a day each of 45 minutes duration. How long each period is if the school has 9 periods a day assuming the number of hours to be the same?
Length of a side of an equilateral triangle and its perimeter vary inversely with each other.
If x varies inversely as y and y = 60 when x = 1.5. Find x. when y = 4.5.