Question

Find two decimal fractions whose sum is 0.9 and the difference is 0.2.

Answer 1

sum of decimal fraction =0.9 =9/10

difference of decimal fraction=2/10 or 1/5

Let the two fractions be x and y respectively,

x +y= 9/10

x -y=2/10

By equating the two equations,

2x=11/10

x =11/20

y=9/10- x

y= 9/10 -11/20 =18-11/20

y =7/20

Therefore the fractions are 11/20 and 7/20.

Answer 2

Answer:

sum of decimal fraction =0.9 =9/10

difference of decimal fraction=2/10 or 1/5

Let the two fractions be x and y respectively,

x +y= 9/10

x -y=2/10

By equating the two equations,

2x=11/10

x =11/20

y=9/10- x

y= 9/10 -11/20 =18-11/20

y =7/20

Therefore the fractions are 11/20 and 7/20

Step-by-step explanation: