Advertisements
Advertisements
Question
Length and breadth of the floor of a room are 5 m and 3 m, respectively. forty tiles, each with area `1/16` m2 are used to cover the floor partially. Find the ratio of the tiled and the non tiled portion of the floor.
Solution
Given, Length of the floor of a room = 5 m
Breadth of the floor of a room = 3 m
Area of the room = Length × Breadth
= 5 × 3 = 15 m2
∵ Area of 1 title = `1/16` m2
∴ Area of 40 tiles = `1/16 xx 40` = 2.5 m2
Area covered by tiles = 2.5 m2
Area not covered by tiles = (15 – 2.5) = 12.5 m2
Ratio of the tiled to non-tiled portion = `(2.5 m^2)/(12.5 m^2) = 25/125 = 1/5` = 1.5
APPEARS IN
RELATED QUESTIONS
Find the sub-duplicate ratio of the following :
c
If x and y both are positive and (2x2 – 5y2) : xy = 1 : 3, find x : y.
Express the following ratios in its simplest form :
4:6
Find: The sub-triplicate ratio of 216: 343
Two poles of different heights are standing vertically on a horizontal field. At a particular time, the ratio between the lengths of their shadows is 2 :3. If the height of the smaller pole is 7.5 m, find the height of the other pole.
Show that 2, 12 and 72 are in continued proportion.
Which ratio is greater:
`8/15` or `5/9`
Make set of all possible proportions from the numbers 15, 18, 35 and 42.
Mr. Sahai and his wife are both school teachers and earn Rs 16800 and Rs 10500 per month respectively. Find the ratio of
(i) Mr. Sahai's income to his wife's income;
(ii) Mrs. Sahai's income to her husband's income;
(iii) Mr. Sahai's income to the total income of the two.
Which pair of ratios are equal? And why?
`4/5, 12/50`
