Question

A boy spends 3/4 of his pocket money and then 4/5 of the remainder is given to her sister . if he has rs . 40 left , what did he have at first

Answer 1

Answer:

please mark as brainlest

Step-by-step explanation:

Let the boy have x rupees

If he spend = 3x/4

Then remaining money he have = (x - 3x/4) = x/4

Now if he gave 4/5 of remaining money to his sister

That means he have (4/5)×(x/4) = x/5

So the remaining amount after all this is =

(x/4) - (x/5) =40

=> x/20 = 40

=> x = 800