Tom spends 1/5 of his salary on food and 1/4 of it on rent and saves the rest.If she saves sh13750 ,how much does she earn?

1/5 + 1/4 = 9/20, leaving 11/20. So,

11/20 x = 13750
Now just find x

To find out how much Tom earns, we can work backwards from the given information.

Let's assume Tom's salary is "x."

Tom spends 1/5 of his salary on food, which is equal to (1/5)x.
He spends 1/4 of his salary on rent, which is equal to (1/4)x.

The amount Tom saves can be calculated by subtracting the amount he spends on food and rent from his salary:
x - ((1/5)x + (1/4)x) = x - (5/25)x - (6/25)x = x - (11/25)x

According to the information given, Tom saves sh13750. So:

x - (11/25)x = sh13750

To solve this equation, we can start by adding the like terms:

(25/25)x - (11/25)x = sh13750

Simplifying further:

(14/25)x = sh13750

Now, we can solve for x by isolating the variable:

x = (25/14) * sh13750

Evaluating the above expression will give us the amount Tom earns.