What is the sum of all two-digit positive integers that are increased by 75% when their digits are reversed?
please include an explanation because I am very confused.
where do you all get these questions....
\((10a+b)\left(\dfrac 7 4 \right) = 10b+a,~a, b \in \mathbb{Z}^+\\ 70a+7b = 40b + 4a\\ 66a = 33b\\ 2a=b\\ 12+24+36+48 = 120\)
