Advertisements
Advertisements
Question
Chalk contains calcium, carbon and oxygen in the ratio 10:3:12. Find the percentage of carbon in chalk.
Advertisements
Solution
Given, Ratio of calcium, carbon and oxygen = 10 : 3 : 12
Total part = 10 + 3 + 12
= 25
Part of carbon = `3/25`
Therefore, Percentage of carbon in chalk powder = `3/25 xx 100`
= `300/25`
= 12%
RELATED QUESTIONS
Convert part of the ratio to percentage:
3 : 1
Convert part of the ratio to percentage:
2 : 3 : 5
If in a stick of chalk, carbon is 3g, what is the weight of the chalk stick?
If Rs. 250 is to be divided amongst Ravi, Raju, and Roy so that Ravi gets two parts, Raju three parts, and Roy five parts. How much money will each get? What will it be in percentages?
In a class, the ratio of girls to boys is 3: 7.
(i) What percentage of the total number of students is girls and what percentage of the total number of students is boys?
(ii) If the total number of students is 70, what would be the number of girls and what would be the number of boys in the class?
Roja earned ₹ 18,000 per month. She utilized her salary in the ratio 2 : 1 : 3 for education, savings and other expenses respectively. Express her usage of income in percentage
The ratio of Saral’s income to her savings is 4 : 1. What is the percentage of money saved by her?
A salesman is on a commission rate of 5%. How much commission does he make on sales worth ₹ 1,500?
The ratio of Fatima’s income to her savings is 4 : 1. The percentage of money saved by her is ______.
2.5 = ______ %.
