Advertisements
Advertisements
प्रश्न
The population of the town is 180,000, out of which males are `1/3` of the whole population. Find the number of females. Also, find the ratio of the number of females to the whole population.
Advertisements
उत्तर १
Total population = 1,80,000
Population of males = `1/3` × 1,80,000 = 60,000
∴ Population of females = 1,80,000 – 60,000 = 1,20,000
The ratio of females to the whole population
= 1,20,000 : 1,80,000 = 12 : 18 = 2 : 3
उत्तर २
The total population of the town = 180,000
The number of males = `1/3` of the total population
Number of males `=1/3×1,80,000=60,000`
The number of females will be the remainder of the population after subtracting the number of males:
Number of females = Total population − Number of males
Number of females = 1,80,000 − 60,000 = 1,20,000
Ratio of females to total population `= ("Number of females")/("Total population") = 120000/180000`
Simplify the fraction:
Ratio `= (120000div60000)/(180000div60000)=2/3`
The number of females is 120,000
The ratio of females to the total population is `2/3`
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?
Find the duplicate ratio of `2sqrt(2) : 3sqrt(5)`
Two positive numbers are in the ratio 3 : 5 and the difference between their squares is 400. Find the numbers.
Find the triplicate ratio of the following :
`sqrt 15 : sqrt 18`
Two numbers are in the ratio 5 : 7 and the difference of their squares is 600. Find the numbers.
If (p - x) : (q - x) be the duplicate ratio of p : q then show that: `1/"p" + 1/"q" = 1/"x"`
A line is divided into two parts in the ratio 2.5 : 1.3. If the smaller one is 35.1 cm, find the length of the line.
Find the reciprocal ratio of 32 : 42
If the ratio of Green, Yellow and Black balls in a bag is 4 : 3 : 5, then
(a) Which is the most likely ball that you can choose from the bag?
(b) How many balls in total are there in the bag if you have 40 black balls in it?
(c) Find the number of green and yellow balls in the bag.
Out of 1800 students in a school, 750 opted basketball, 800 opted cricket and remaining opted table tennis. If a student can opt only one game, find the ratio of number of students who opted cricket to the number of students opting basketball.
