Find the percentage of copper in the alloy?

An alloy consists of 7 parts of zinc and 33 parts of copper. Find the percentage of copper in the alloy.

Solution:

Chalk contains calcium, carbon and sand in the ratio 12 : 3 : 10. Find the percentage of carbon in the chalk 12%.

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.