The units digit of a 2-digit number is three times its tens digit. If the units digit is 6, what is the value of twice the number?

Correct option is D

Given:

Unit digit of a two digit number is 3 times its tens digit

Solution:

Let the two digit number be 10x +y

Then y = 3x

If y = 6 then

x =$$\frac{6}{3}$$​ = 2

Number is 26

Twice the number $$= 2 \times 26$$ = 52