Advertisements
Advertisements
Question
The weekly expenses of a boy have increased from ₹ 1,500 to ₹ 2,250. Find the ratio of:
(i) increase in expenses to original expenses.
(ii) original expenses to increased expenses.
(iii) increased expenses to increase in expenses.
Solution
Original expenses =₹1500
Increased expenses =₹2250
Increase in expenses = ₹2250– ₹1500=₹750
Now,
(i) Ratio in increase in expenses to original expenses =₹750 : 1500 = 1 : 2
(ii) Original expenses to increased expenses = ₹1500 : ₹2250
`1500/750=2250/750=2:3`
(iii) Increased expenses to increased in expenses = ₹2250 : ₹750 = 3 : 1 ......(Dividing by 750)
APPEARS IN
RELATED QUESTIONS
If x : y = 4 : 7, find the value of (3x + 2y) : (5x + y).
If (a – b) : (a + b) = 1 : 11, find the ratio (5a + 4b + 15) : (5a – 4b + 3).
The work done by (x – 2) men in (4x + 1) days and the work done by (4x + 1) men in (2x – 3) days are in the ratio 3 : 8. Find the value of x.
In a basket, the ratio between the number of oranges and the number of apples is 7 : 13. If 8 oranges and 11 apples are eaten, the ratio between the number of oranges and the number of apples becomes 1 : 2. Find the original number of oranges and the original number of apples in the basket.
Convert the following percentage to fractions and ratio:
0.25%
Find the ratio of the following in the simplest fcrm:
a4 + b4 and a3 - b3
Find the duplicate ratio of the following :
`2/3 : 4/9`
Two positive numbers are in the ratio 3: 4 and the sum of their squares is 1225. Find the numbers.
If the ratio between 8 and 11 is the same as the ratio of 2x - y to x + 2y, find the value of `(7"x")/(9"y")`
A school has 630 students. The ratio of the number of boys to the number of girls is 3 : 2. This ratio changes to 7 : 5 after the admission of 90 new students. Find the number of newly admitted boys.
State true or false :
A ratio equivalent to 5 : 4 is 240 : 192
In a class, the ratio of boys to the girls is 7:8. What part of the whole class are girls?
Find the third proportional of 1.6 and 0.8
The costs of the two articles are in the ratio 7 : 4. If the cost of the first article is Rs. 2,800; find the cost of the second article.
The income of a man is increased in the ratio of 10 : 11. If the increase in his income is Rs 600 per month, find his new income.
A factory produces electric bulbs. If 1 out of every 10 bulbs is defective and the factory produces 630 bulbs per day, find the number of defective bulbs produced each day.
The 1st, 2nd, and 4th terms of a proportion are 12, 21, and 14 respectively. Its third term is
If `x/a = y/b = z/c`, prove that `(3x^3 - 5y^3 + 4c^3)/(3a^3 - 5b^3 + 4c^3) = ((3x - 5y + 4c)/(3a - 5b + ac))^3`
The ratio of ₹ 1 to 20 paise is _______________
In the following figure, division represents 1 cm:
Express numerically the ratios of the following distances:
AC : AF
