Let the number be x and on dividing x by 5, we get k as quotient and 3 as remainder.
x = 5k + 3
x2 = (5k + 3)2
= (25k2 + 30k + 9)
= 5(5k2 + 6k + 1) + 4
On dividing x2 by 5, we get 4 as remainder.
Let the total profit be Rs. 100.
After paying to charity, A's share = Rs. | ![]() | 95 x | 3 | ![]() | = Rs. 57. |
5 |
If A's share is Rs. 57, total profit = Rs. 100.
If A's share Rs. 855, total profit = | ![]() | 100 | x 855 | ![]() | = 1500. |
57 |