Question

sum iof two numbers is 240 and their difference is 20 find the number
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Answer 1

Step-by-step explanation:

let the numbers be X and Y

Given X + Y = 240 ------ (1)

X - Y = 20 ----------(2)

2X = 260 ( adding (1) and (2))

X = 260/2

X = 130

substitute value of X in (1)

130 + Y = 240

Y = 240 - 130

Y = 110

the numbers are 130 and 110

Answer 2

SOLUTION

GIVEN

• Sum of two numbers is 240

• Their difference is 20

TO DETERMINE

The numbers

EVALUATION

Let numbers are a and b

Since Sum of two numbers is 240

a + b = 240 - - - - - - -(1)

Their difference is 20

a - b = 20 - - - - - - - (2)

Adding Equation 1 and Equation 2 we get

2a = 260

⇒ a = 130

From Equation 1 we get

130 + b = 240

⇒ b = 240 - 130

⇒ b = 110

FINAL ANSWER

Hence the numbers are 110 and 130

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