iq quiz game 47

Test # 47
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1. Man driving a distance of 90 miles averages 30 miles/hr. On the return trip he averages 45 miles/hr. What was his average speed for the round trip (in miles/hr)?

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have an eye for (something)
to have good taste in something, to be able to judge something correctly
The girl has an eye for nice furniture and her apartment is absolutely beautiful.
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