Answer:
brother : 22.5%
sister:77.5%
Step-by-step explanation:
Answer:
120 and 122
Step-by-step explanation:
Let the width = x
the length = x+7
=> Area equation = length x width = x(x+7) = x^2 +7x = 78
=> x^2+7x -78 = 0
=> (x-6)(x+13)=0
=> x=6 or x=-13(no)
=> the width = 6 m
=> the length = 6+7= 13 m
