23. Find two numbers whose sum is 75 and difference is 15
Answers
Answered by
7
Step-by-step explanation:
let the numbers be x and y
their sum = 75 and difference = 15
x + y = 75
x - y = 15
........................
2x = 90
.....................
2x = 90
x = 90/2
x = 45
substitute in 1st equation
x + y = 75
45 + y = 75
y = 75 - 45
y = 30
hence the two numbers are 45 and 30
hope it helps.....
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Answered by
0
Let the two number be x and y
x + y = 75
x - y = 15
Adding both
2x = 90
x = 45
Substitute in first one
y = 75 - 45 = 30
x = 45 and y = 30
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