Question

Solve the proportion using cross products. Round to the nearest hundredth if necessary. 21/49=15/h hours

A.35
B.2.5
C.4.2
D.6.0

(I would like a teacher from here to help me asap. I don't know what to do so an explanation would be appreciated. Thank-you.
so do the product.
21h = 49*15
now divide by 21
The answer is 35 Thank you oobleck!

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