Question

If a+b is 40% is equal to a-b is 60% then what is the value of 2a-3b/a+b

Answer 1

a+b=40%
a=40%-b
in second case
a-b=60%
40%-b-b=60%
40%-2b=60%
-2b=60-40
-2b=20
b=-10
a=50
2a-3b/a+b
2×50-3×-10/50-10
100+30/40
130/40
13/4

Answer 2

Answer:

13/4

Step-by-step explanation:

a+b=40%

a=40%-b

in second case

a-b=60%

40%-b-b=60%

40%-2b=60%

-2b=60-40

-2b=20

b=-10

a=50

2a-3b/a+b

2×50-3×-10/50-10

100+30/40

130/40

13/4