Final answer:
The boy's total pocket money is Rs60, calculated by dividing the remaining amount of Rs36 by 60%, which represents the remaining part of his pocket money after spending 40%.
Step-by-step explanation:
If a boy spends 40% of his pocket money and is left with Rs36, the remaining 60% of his pocket money equals Rs36. To find the total amount of pocket money he gets, we can set up the problem as an equation where 60% of his total pocket money (which we'll call 'x') is equal to Rs36.
The equation is:
0.60 * x = Rs36
To solve for 'x', we divide both sides of the equation by 0.60:
x = Rs36 / 0.60
x = Rs60
Therefore, the boy's total pocket money is Rs60. This is a basic percentage problem where the concept of percentages representing parts of a whole is applied.