Advertisements
Advertisements
प्रश्न
If x : y = 2 : 3, find the value of (3x + 2y) : (2x + 5y).
उत्तर
We have
`x/y = (2)/(3)`
Now `(3x + 2y)/(2x + 5y) = (y((3x)/y + 2))/(y((2x)/y + 5)`
(Both numerator and denominator are divided by y)
`(3 xx 2/3 + 2)/(2 xx 2/3 + 5) = (4)/(19/3)`
= `(4 xx 3)/(19)`
= 12 : 19.
APPEARS IN
संबंधित प्रश्न
A football team won 10 matches out of the total number of matches they played. If their win percentage was 40, then how many matches did they play in all?
If `(m + n)/(m + 3n) = 2/3`, find : `(2n^2)/(3m^2 + mn)`.
Convert the following percentage to fractions and ratio:
0.3%
If x2, 4 and 9 are in continued proportion, find x.
Find: The reciprocal ratio of 8: 15.
Two numbers are in the ratio 10: 11. Their sum is 168. Find the numbers.
Write the following ratio in the simplest form:
3 m 5 cm : 35 cm
Write the following ratio in the simplest form:
4 kg : 2 kg 500 g
Find the ratio of the following:
40 cm to 1.5 m
In a college, out of 4320 students, 2300 are girls. Find the ratio of number of boys to the number of girls.
