A golden padlock weighs 4/5 of a pound, but only 3/4 of the padlock is real gold. How
many pounds of real gold are in the
padlock?

A large, silver key contains 5 1/3 ounces of
silver. A similar key, 1 7/8 times bigger than
the first is made. How many ounces of
silver does it contain?

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if x = 1, then the answer is 3.5

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.