Question

10. If sum of two numbers is 20
and one of the number is 3
times of the other, then the
smaller number is?
a. 5
b. 15
c. 4
d. 6​

Answer 1

Step-by-step explanation:

Let the numbers be 3x,x

3x+x=20

4x=20

x=20/4

x=5

So,

3x=3(5)=15

x=5

Therefore,the smaller number is 5.

Answer 2

Answer:

Let the smaller number be x

So, the bigger is 3x

According to the question

x + 3x = 20

4x = 20

x = 20/4

x = 5

So, the smaller no. is 5

Hence, option a) 5 is correct answer.