Question

sum of 2 number is 17 and difference between them is 5%.find the product​

Answer 1

let the 2 no be x and y

x + y = 17...(1)

x - y = 5 %

so

x - y = 5 /100

x - y = 1 /20

20x - 2o y = 1

multiply the 1 eq by 20 so we get

20x + 20y = 340 ...(2)

eliminating eq 1 and 2 we get

20x + 20y = 340

20x - 20y = 1