Advertisements
Advertisements
Question
An alloy of zinc and copper weighs `12 1/2`kg. if in the alloy, the ratio of zinc and copper is 1 : 4, find the weight of copper in it.
Advertisements
Solution
Weight of alloy = `12 1/2`kg = `25/2`kg.
Given ratio =1 : 4
Sum of ratio =1 + 4 = 5
Weight of copper = `4/5xx25/2`kg = 2 × 5 = 10 kg
APPEARS IN
RELATED QUESTIONS
Find the number which bears the same ratio to `7/33` that `8/21` does to `4/9`.
`square` ABCD is a parallelogram. The ratio of `angle`A and `angle`B of this parallelogram is 5 : 4. Find the measure of `angle`B.
What quantity must be added to each term of the ratio (p + q) : (p - q) to make it equal to (p + q)2 : (p - q)2 ?
Express the following ratios in its simplest form :
48: 54
Find: The triplicate ratio of 3: 7
Rohit earns Rs 15300 and saves Rs 1224 per month. Find the ratio of
(i) his income and savings:
(ii) his income and expenditure;
(iii) his expenditure and savings.
If the cost of 30 packets of 8 pencils each is Rs 600, what is the cost of 25 packets of 12 pencils each?
In an army camp, there were provisions for 425 men for 30 days. How long did the provisions last for 375 men?
Which pair of ratios are equal? And why?
`2/3, 4/6`
Which pair of ratios are equal? And why?
`4/5, 12/50`
