Question

please solve question 3 quickly

Answer 1

Answer:

let the number of coin of 10p be x

and 50p be 70 - x

change in ruppees 10p = 1/10

50p = 1/2

1/10(x) + 1/2(70-x)=19

x/10 + 70-x/2 = 19

x+350-10x = 190

-9x = 190-350

x = 160/9