F has 10 more marbles than I. Both boys have 15 marbles combined. How many marbles does each boy have? Show your work.

F has 10 marbles and I has 5 marbles.

Solution:

From question, given that F has 10 more marbles than I. Both F and I have 15 marbles together.

So the total number of marbles is 15. We can write equation as

Total number of marbles = number of marbles of F + number of marbles of I

15 = number of marbles of F + number of marbles of I

Given in question that F has 10 more marbles that I, hence it's clear from above equation that number of marbles of F is 10 and number of marbles of I is 5. so together they contain 15 marbles.

hence F has 10 marbles and I has 5 marbles.