Question

Ravi had some marbles .he gave 1/7 marbles to his brother and 1/3 of the remaining to his friend.if Ravi has 24 marbles left with him how many marbles did he have in the beginning?

Answer 1

Answer:

Step-by-step explanation:

Let the intial number of marbles that Ravi had be x;

Number of marbles given to his brother =x÷7;

Number of marbles given to his friend =(x-x÷7)÷3

Number of marbles left with Ravi or the number of marbles remaining=24

Intial number of marble he had= marbles distributed among his brother and friend+ The marbles left with him

x=(x÷7)+(x÷3)-(x÷21)+24

x=9x÷21 +24

12x÷21=24

12x=21×24

x=42

Number of marbles Ravi had at the beginning is equal to 42