Izza gave 20% of her candies to Urooj and 15% to Mehwish. If she still had 520 candies, how many did she have originally?

Izza gave 20% of her candies to Urooj and 15% to Mehwish. If she still had 520 candies, how many did she have originally?

Explanation
  • 20% of x given to Urooj0.2x
  • 15% of x given to Mehwish0.15x
  • Remaining candies = 520

So,
x - (0.2x + 0.15x) = 520
x - 0.35x = 520
0.65x = 520
x = 520 ÷ 0.65 = 800