Total mass = 132.3kg
Total mass for mangoes = (132.3-35.1)kg/2 + 35.1kg = 83.7kg
Total mass for watermelon= (132.3-35.1)kg/2 = 48.6kg
a) Mass of all watermelon is 48.6kg.
Ratio of qty of mangoes to watermelon => 5 : 1
5 unit of mangoes => 83.7kg
1 unit of mangoes => 83.7kg/5 = 16.74kg
1 unit of watermelon =>48.6kg
Diff in mass for 1 unit => 48.6kg – 16.75kg = 31.86kg
No of fruit in 1 unit will be 31.86 / 1.18 = 27.
16.74kg / 27 = 0.62kg
b) Mass of each mango is 0.62kg.