MEDIUM
8th CBSE
IMPORTANT
Earn 100

Gunpowder contains 75% nitre and 10% sulphur. Find the amount of the gunpowder which carries 9 kg nitre. What amount of gunpowder would contain 2.3 kg sulphur?

Important Questions on Percentage

MEDIUM
8th CBSE
IMPORTANT
Mathematics for Class 8>Chapter 12 - Percentage>EXERCISE>Q 14
An alloy of tin and copper consists of 15 parts of tin and 105 parts of copper. Find the percentage of copper in the alloy?
MEDIUM
8th CBSE
IMPORTANT
Mathematics for Class 8>Chapter 12 - Percentage>EXERCISE>Q 15
An alloy contains 32% copper, 40% nickel and rest zinc. Find the mass of the zinc in 1 kg of the alloy.
EASY
8th CBSE
IMPORTANT
Mathematics for Class 8>Chapter 12 - Percentage>EXERCISE>Q 16
A motorist traveled 122 kilometers before his first stop. If he had 10% of his journey to complete at this point, how long was the total ride?
EASY
8th CBSE
IMPORTANT
Mathematics for Class 8>Chapter 12 - Percentage>EXERCISE>Q 17
A certain school has 300 students, 142 of whom are boys. It has 30 teachers, 12 of whom are men. If k3% of the total number of students and teachers in the school is female, then find the value of k.
MEDIUM
8th CBSE
IMPORTANT
Mathematics for Class 8>Chapter 12 - Percentage>EXERCISE>Q 18
Aman’s income is 20% less than that of Anil. How much percent is Anil’s income more than Aman’s income?
MEDIUM
8th CBSE
IMPORTANT
Mathematics for Class 8>Chapter 12 - Percentage>EXERCISE>Q 19
The value of a machine depreciates every year by 5%. If the present value of the machine be ₹ 100000, what will be its value after 2 years?
MEDIUM
8th CBSE
IMPORTANT
Mathematics for Class 8>Chapter 12 - Percentage>EXERCISE>Q 20
The population of a town increases by 10% annually. If the present population is 60000, what will be its population after 2 years?
MEDIUM
8th CBSE
IMPORTANT
Mathematics for Class 8>Chapter 12 - Percentage>EXERCISE>Q 21
The population of a town increases by 10% annually. If the present population is 22000, find its population a year ago.