+0

0
36
1

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.

Feb 23, 2019

#1
+4449
+1

where do you all get these questions....

$$(10a+b)\left(\dfrac 7 4 \right) = 10b+a,~a, b \in \mathbb{Z}^+\\ 70a+7b = 40b + 4a\\ 66a = 33b\\ 2a=b\\ 12+24+36+48 = 120$$

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Feb 23, 2019