Question

the cost of 30 mangoes is less than the cost of 40 mangoes by rupees 50 find the cost of 15 mangoes in rupees

Answer 1

cost of 10 mangoes =rs. 50
cost of 5 mangoes =rs. 25
therefore cost of 15 mangoes =rs 75

Answer 2

let x be the value of one mango there forth cost of 30 mangoes is 30 x and 40 mangoes is 40 x
40 x - 30x =15
on solve
cost of 1 mangoe is 1.5
cost of 50 mangoes is 75 ru