(17)3.5 × (17)? = 178

A 2.29

B 2.75

C 4.25

D 4.5

Solution

Correct Answer: Option D

(17)3.5 × (17)? = 178
⇒ 173.5 + ? = 178
⇒ 3.5 + ? = 8
⇒ ? = 8 - 3.5
⇒ ? = 4.5

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