Question

Christy donated 10% of his income to an orphanage and deposited 20% of remaining in his bank if the has now 7200 left what is the his income

Answer 1

Answer:

Income 10000

Explanation:

Let x be the amount of his income.

After donating 10%, he is left with:

90% of income = 90% of x = 0.9 x.

After depositing 20% of this, he is left with:

80% of 0.9x = 0.8 × 0.9 x = 0.72 x

This amount left is 7200, so

0.72 x = 7200

=> x = 7200 / 0.72 = 10000

Answer 2

hope u could find the ans for yrself