Statement Sums involving Proportion
Statement Sums Involving Proportion
Statement Sums involving Proportion:
In the statement we are given a relation and then a value of one thing we are supposed to find the value of the other thing. Sometimes we are given the values of the certain quantities we are supposed to find the whether they are in proportion
Illustration: The first, second and third terms of the proportion are 42, 36, 35. Find the fourth term.
Solution: Let the fourth term be x.
Thus 42, 36, 35, x are in proportion.
Product of extreme terms = 42 ×x
Product of mean terms = 36 X 35
Since, the numbers make up a proportion
Therefore,
product of extreme = product of mean
42 × x = 36 × 35
or,
or, x = 30
Therefore, the fourth term of the proportion is 30.
At a particular time, the shadow of a pole and tower are respectively 15 m and 45m. If the height of the tower is 60m, find the height of the pole. | |||
| Right Option : A | |||
| View Explanation | |||
Coins of 50 paise, Rs.1, Rs. 5 and x are in proportion. Find the value of x. | |||
| Right Option : C | |||
| View Explanation | |||
A farmer planted 2160 tomato plants in a field in rows, each having 72 plants. A certain type of worm destroyed 27 plants in each row. How many plants did the worm destroy in the whole field ? | |||
| Right Option : C | |||
| View Explanation | |||
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