Robert spent 3/8 of his monthly income on food and 3/10 of the remaining on house rent. What fraction of the income is left with him?

Question

I dont know how to solve this problem. Please help me out. Aksvskskgebemskbbxknsbsnskskkdbdndjkwhwnsnxbdbjsjsjdnj

Answer 1

Convert to decimals. 

3/8 = 0.375

3/10 = 0.300

Add together = 0.675 = amount spent

Amount left = 1.000 - 0.675 = 0.325

As a fraction, this = 13/40