Question

income ratio of a b and c is 5 is to 7 is to 4 and their expenditure ratio is 6:5:3​

Answer 1

Answer:

let the income of A, B and C are 7x, 9x and 12x respectively

=> and expenditure of A, B and C are 8y, 9y and 15y respectively

=> income of A×14= saving of A (given)

=> 7x - 8y = 7x×14

=> 28x - 32y = 7x

=> 21x = 32y

x : y

=> 32 : 21

∴ The ratio of savings of A, B and C

=> (7x - 8y) : (9x - 9y) : (12x - 15y)

=> (7×32−8×21):(9×32−9×21):(12×32−15×21)

=> (224 - 168) : (288 - 189) : (384 - 315)

56 : 99 : 69

hope it helps

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