Advertisements
Advertisements
Question
12 cows can graze a field for 10 days. 20 cows can graze the same field for _______ days
Options
15
18
6
8
Advertisements
Solution
6
Explanation;
Hint:
| Cows | Days |
| 12 | 10 |
| 20 | x |
12 × 10 = 20 × x, x = `(12 xx 10)/20`
= 6
APPEARS IN
RELATED QUESTIONS
Which of the following are in inverse proportion?
The population of a country and the area of land per person.
A person has money to buy 25 cycles worth Rs 500 each. How many cycles he will be able to buy if each cycle is costing Rs 125 more?
Three persons can build a small house in 8 days. To build the same house in 6 days, how many persons are required?
6 pipes are required to fill a tank in 1 hour 20 minutes. How long will it take if only 5 pipes of the same type are used?
A toy company requires 36 machines to produce car toys in 54 days. How many machines would be required to produce the same number of car toys in 81 days?
10 farmers can plough a field in 21 days. Find the number of days reduced if 14 farmers ploughed the same field?
A flood relief camp has food stock by which 80 people can be benefited for 60 days. After 10 days 20 more people have joined the camp. Calculate the number of days of food shortage due to the addition of 20 more people?
Which quantities in the previous question vary inversely with each other?
In case of inverse proportion, `a_2/- = b_2/-`
If p and q are in inverse variation then (p + 2) and (q – 2) are also in inverse proportion.
