Question

what are two decimal numbers whose sum is 11 and difference is 0.5?

Answer 1

Step-by-step explanation:

let the two numbers be X and Y

According to question

X+Y = 11 , X-Y = 0.5

X=11-Y , X-Y = 0.5 =》 11-Y-Y = 0.5

=》 -2Y = 5/10 - 11 =》 -2Y = (5-110)/10

=》 -2Y = -105/10 =》 Y = 105/20 = 52.5/10

=》 Y = 5.25 =》 X = 11 - 5.25 = 5.75

Hence the two numbers are 5.75 and 5.25