Advertisements
Advertisements
प्रश्न
Ten gram of an alloy of metals A and B contains 7.5 gm of metal A and the rest is metal B. Find the ratio between :
(i) the weights of metals A and B in the alloy.
(ii) the weight of metal B and the weight of the alloy.
उत्तर
Total weight of A and B metals = 10 gm A’s weight = 7.5 gm B’s weight = 10 – 7.5 = 2.5 gm
(i) Ratio between A and B = 7.5 : 2.5
`= 75/10 : 25/10 = 3:1`
(ii) Ratio between B and total alloy
`= 2.5 : 10 = 25/10 : 10`
⇒ 25 : 100 = 1 : 4
APPEARS IN
संबंधित प्रश्न
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.
Find the value of x, if: (3x – 7) : (4x + 3) is the sub-triplicate ratio of 8 : 27.
Find the ratio of the following in the simplest fcrm:
5.60 and 2.40
Find the compounded ratio of the following:
(m-n):(m+n), (m+n)2 : (m2+n2) and (m4 - n4): (m2-n2) 2
Which of the following ratio is greater ?
5 : 8 and 7 : 10
A woman reduces her weight in the ratio 7 : 5. What does her weight become if originally it was 84 kg?
Find the compound ratio of the following:
If A : B = 4 : 5, B : C = 6 : 7 and C : D = 14 : 15. Find A : D.
Express the given ratio in its simplest form: 40 kg : 1 quintal
If 4, x and 9 are in continued proportion, find the value of x.
Find the ratio of the first quantity to the second.
99 kg, 44000 grams
If the angles of a triangle are in the ratio 2 : 3 : 4, find the angles.
Express the following ratio in the simplest form:
480 : 384
If the cost of 5 bars of soap is Rs 82.50, then the cost of one dozen such bars is
If a : b = 3 : 5, find (3a + 5b): (7a – 2b).
On a shelf, books with green cover and that with brown cover are in the ratio 2:3. If there are 18 books with green cover, then the number of books with brown cover is ______.
A ratio will always be more than 1.
Which pair of ratios are equal? And why?
`4/5, 12/50`
Of the 288 persons working in a company, 112 are men and the remaining are women. Find the ratio of the number of men to that of women.
Of the 288 persons working in a company, 112 are men and the remaining are women. Find the ratio of the number of men to the total number of persons.
A scooter travels 120 km in 3 hours and a train travels 120 km in 2 hours. Find the ratio of their speeds.
