Apple = 1 unit. Mango = twice the apple = 2 units. Papaya = twice the mango = 4 units. Together 7 units = 560 g.

Apple1Mango11Papaya1111560 g

Plain numbers are given; italic underlined numbers are worked out.

  1. 1 + 2 + 4 = 7 units → 560 g
  2. 1 unit (apple) → 560 ÷ 7 = 80 g
  3. Papaya = 4 units → 4 × 80 = 320 g

The papaya’s mass is 320 g.

Check: apple 80 + mango 160 + papaya 320 = 560 g. ✓