Advertisements
Advertisements
प्रश्न
In a mixture of 126 kg of milk and water, milk and water are in ratio 5 : 2. How much water must be added to the mixture to make this ratio 3 : 2?
Advertisements
उत्तर
Let x signify water in original mixture and y signifies milk
x + y = 126
5x = 2y
or x = `y/2.5`
`y + (y/2.5) = 126`
y = 90 kgs (milk)
x = 36 kgs (water)
Milk remains same as 90 kgs
ratio is 3 : 2
let new water content be z
3z = 2 × 90
Water quantity new = 60 kgs
Extra water added = 24 kgs
संबंधित प्रश्न
If 3x + 4 : x + 5 is the duplicate ratio of 8 : 15, find x.
Find the reciprocal ratio of e following :
a3b2 : a2b3
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.
In a club has 360 members, 40 play carrom, 96 play table tennis, 144 play badminton, and remaining members play volley-ball. If no member plays two or more games, find the ratio of members who play:
(i) carrom to the number of those who play badminton.
(ii) badminton to the number of those who play table-tennis.
(iii) table-tennis to the number of those who play volley-ball.
(iv) volleyball to the number of those who play other games.
Which of the following numbers are in continued proportion:
6, 12 and 24
If `(2"y"+5"x")/(3"y"-5"x")=2 1/2`, find y, if x = 33
Find the compounded ratio of: (a – b) : (a + b), (a + b)2 : (a2 + b2) and (a4 – b4) : (a2 – b2)2
In a mixture of 45 litres, the ratio of milk to water is 13 : 2. How much water must be added to this mixture to make the ratio of milk to water as 3 : 1 ?
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.
Find the compound ratio of:
(a + b)2 : (a – b )2 ,
(a2 – b2) : (a2 + b2),
(a4 – b4) : (a + b)4
