Answer: He spent $ 11.25 at the barber shop.
Explanation:
Here, The cost of hair cutting = $ 9,
While, the tip he gave = 25 % of the cost of hair cutting
= 25 % of 9
= 0.25 × 9
= $ 2.25
Since, Victors's total spending = The cost of hair cutting + Tip
= 9 + 2.25
= $ 11.25
Hence, He spent $ 11.25 at the barber shop.