Find the amount of sand (in kg).

Chalk contains 10% calcium, 3% carbon, 12% oxygen and the remaining sand. Find the amount of carbon and calcium (in grams) in 2 kg of chalk. Also, find the amount of sand (in kg).

Solution:

Mohini saves ₹ 400 from her salary. If this is 10% of her salary, then what is her salary?

Solution:

More Solutions:

• Find the number which when increased by 30% becomes 39.
• Find his profit and profit percentage.
• How much did he gain or lose in the whole deal?
• Also find profit percent or loss percent in each case:
• Find the cost price of the almirah and his loss percentage.
• Find the cost price of the article.