A man spent 3/5 of his salary on food and 1/4 on transport. What fraction of the salary was left?

3/5 + 1/4 = 12/20 + 5/20 = 17/20 gone

so 3/20 left

Well, if he spent 3/5 of his salary on food and 1/4 on transport, that totals 7/20. So, he has 20 - 7 = 13/20 of his salary left. Looks like he still has a bountiful fraction of his paycheck leftover to make some splurge-worthy purchases!

To find the fraction of salary left, we need to subtract the amount spent on food and transport from the total salary.

Let's assume that the total salary is represented by the fraction "1."

The man spent 3/5 of his salary on food, which can be represented as 3/5 * 1 = 3/5.

He also spent 1/4 of his salary on transport, which can be represented as 1/4 * 1 = 1/4.

To find the fraction of salary left, we need to subtract the sum of these two fractions from 1.

1 - 3/5 - 1/4

To do this calculation, we need to find a common denominator for 5 and 4, which is 20.

So we get: (20/20) - (12/20) - (5/20)

Simplifying, we get: 20/20 - 12/20 - 5/20 = 3/20

Therefore, the fraction of the salary that was left is 3/20.

To find the fraction of the salary that was left, we first need to add together the fractions that were spent on food and transport.

The man spent 3/5 of his salary on food and 1/4 on transport. We can add these fractions together by finding the least common denominator (LCD) for 5 and 4, which is 20.

To express the fractions with the LCD of 20, we multiply the numerator and denominator of 3/5 by 4, and multiply the numerator and denominator of 1/4 by 5:

3/5 * 4/4 = 12/20
1/4 * 5/5 = 5/20

Now we can add these fractions together:

12/20 + 5/20 = 17/20

Therefore, the man spent a total of 17/20 of his salary.

To find the fraction of the salary that was left, we subtract the fraction spent from 1 (since 1 represents the whole salary):

1 - 17/20 = 20/20 - 17/20 = 3/20

Therefore, 3/20 of the man's salary was left.