If 1 US dollar is equivalent to 0.92 euros, how many euros is $150 equivalent to?

Each dollar is worth $0.92$ euros, so multiply: $150\cdot0.92=138$ euros, choice A. A quick check is that euros are worth more than dollars here, so you get fewer euros than dollars, which means the answer should be less than $150$. Choice D ($163.04$) divides by $0.92$, which converts euros to dollars instead. Choice C ($158.70$) adds $8\%$ to $150, going the wrong way. Choice B ($142.00$) subtracts $8$ from $150$ rather than taking $8\%$ of it. A conversion rate is a multiplier for the units it converts from.