Final answer:
Ahmad started with 35 marbles as he lost 7 marbles which was one fifth of his original number.
Step-by-step explanation:
Ahmad lost 7 marbles in a game, and this number was one fifth of the number he started with.
To find the total number of marbles Ahmad had initially, we can set up a simple equation.
Let's use the variable x to represent the total number of marbles and create our equation based on the information given:
7 = x/5.
To solve this equation for x, we multiply both sides by 5:
5 * 7 = x
35 = x.
Ahmad started with 35 marbles.