Question

a+b=80 a-b=40 a/b=?​

Answer 1

Answer ✌

a+b=80.......... (1)

a-b=40........... (2)

by equation (1) & (2)

2b= 40

b=20

........

putting b in equation ...(1)

a+20=80

a= 80-20

a= 60

................ ⏩⏩

a/b = 60/20

= 3

so, the answer is 3.

. hope this helps...

Answer 2

The required solution is 3

Step-by-step explanation:

Let a+b=80 be equation 1

a-b=40 be equation 2

We will add equation 1 and equation 2

$a+b=80\\a-b=40\\2a=120$

Divide 2 on both sides to isolate a

$\frac{2a}{2}=\frac{120}{2}\\ \\a=60$

Now substitute a in equation 1

$60+b=80$

Subtract 60 from both sides to isolate b

$60-60+b=80-60\\b=20$

Thus plugging the values of

$a=60,b=20\\\\\frac{a}{b} =\frac{60}{20}=3$

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