I just posted the video explanations to all of the math questions in the 2015 December ACT Form 72E Test.
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ACT Math Practice Question: Digits and Place Value
Try this ACT math practice question on digits and place value:
If $t$ and $u$ are the tens and units digit of a positive integer $n$, and the number that results after reversing the digits of $n$ is $18$ more than $n$, then which of the following gives $t$ in terms of $u$ ?
- $\quad 10-u$
- $\quad u-2$
- $\quad u-1$
- $\quad u+1$
- $\quad u+2$