Question

Find two decimal fraction whose sum 1 and the differenc is 0.5.

Answer 1

Answer:

Step-by-step explanation:

let the numbers be a and b

a+b=1. (i)

a-b=0.5 (ii)

by adding (i) and (ii),we get

a+b=1

a-b=0.5

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2a=1.5

a=1.5/2 =0.75

by putting value of a in (i)

a+b=1

0.75+b=1

b=1-0.75=0.25

Answer 2

Answer:

two decimal are 0.25 and 0.75

Step-by-step explanation:

let two number be x and y

therefore, x + y = 1                ...(1)

                 x - y = 0.5            ...(2)

in equation (1)

x + y = 1

x = 1 - y                                 ...(3)

substituting equation (3) in equation (2)

x - y = 0.5

(1 - y) - y = 0.5

1 - y - y = 0.5

- 2y = 0.5 - 1

y = -0.5/-2

y = 0.25

substituting value of 'y' in equation (1)

x + y = 1

x + 0.25 = 1

x = 1 - 0.25

x = 0.75