Question

Exercise 6.2
1. The sum of a number and 4 times itself is 80. What is the number?
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Answer 1

Answer:

80+80+80+80=320..............

Answer 2

Answer:

16

Step-by-step explanation:

Let the number be 'x'

Then, 4 times the number = 4x

According to the question,

x + 4x = 80

⇒5x = 80

⇒ x = 80/5

⇒ x = 16

Therefore, the numbers are

x = 16

4x = 4×16 = 64