If it takes mark twice as long to earn $6.00 as it takes carl to earn $4.00, what is the
ratio of mark’s pay per hour to carl’s pay per hour?

If it takes Mark twice as long to make $6.00 than Carl making $4.00, this means Mark made $3.00 in the time it took Carl to make $4.00.
So the ratio is $3.00 to $4.00, or 3/4.

It takes Mark twice as long so divide the money he makes by 2. He makes $3 in the time it takes Carl to earn $4 so...
The ratio is 3:4 or 3 to 4 or 3/4.

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