Advertisements
Advertisements
प्रश्न
The strength of a class is 65, including 30 girls. Find the ratio of the number of:
(i) girls to boys
(ii) boys to the whole class
(iii) the whole class to girls
Advertisements
उत्तर
Total strength of class (including boys and girls) = 65
Number of girls = 30
Number of boys = (65 – 30) = 35
(i) Ratio between girls and boys
`=30:35=30/35=6/7=6:7`
(ii) Ratio between boys and whole class
`35:65=35/65=7/13=7:13`
(iii) Ratio between whole class and girls
`65:30=65/30=13/6=13:6`
APPEARS IN
संबंधित प्रश्न
If 60% people in city like cricket, 30% like football, and the remaining like other games, then what percentage of the people like other games? If the total number of people is 50 lakh, find the exact number who like each type of game.
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.
Find sub-triplicate ratio of 64 : 27
Find the duplicate ratio of the following :
`2/3 : 4/9`
Find: The sub-duplicate ratio of 256: 625
In an examination, the number of those who passed and the number of those who failed were in the ratio of 3 : 1. Had 8 more appeared, and 6 less passed, the ratio of passed to failures would have been 2 : 1. Find the number of candidates who appeared.
If `x/a = y/b = z/c`, prove that `(3x^3 - 5y^3 + 4z^3)/(3a^3 - 5b^3 + 4c^3) = ((3x - 5y + 4z)/(3a - 5b + 4c))^3`.
If x : a = y : b, prove that `(x^4 + a^4)/(x^3 + a^3) + (y^4 + b^4)/(y^3 + b^3) = ((x + y)^4 + (a + b)^4)/((x+ y)^3 + (a + b)^3`
Ratio of ₹ 3 to ₹ 5 = ______________
Ratio of 75 paise to ₹ 2 = _____________
