Answer:
I think the área is 50
Step-by-step explanation:
because 10x5=50
Laura paddles in her canoe at a speed of 5 mph for 5 miles.
As we know that

Substitute the values we get

Laura hops on her windsurfer and sails for 12 miles at a speed of 6 mph.
Again using the above formula we can write

Hence from equation (i) and (ii), we can say total time of travel
Besides the obvious one(81*1), the only 2 combinations are 9 and 9, or 27 and 3.
Your answer is A!
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