exam Maths Puzzle Numerical Ability

what equations do i need to solve this? i've tried b +r = 24, (24-r)8 + (24-b)2.5 = 137 but always end up with two variables and cannot solve. Helo!

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exam Other Question

Mr. Cruz traveled by car to the church at a rate of 50kph. On his trip, he drove at 60kph and covered the same distance in 3 hours less than the time for the first trip. How many h Every day at noon a ship leaves Los Angeles for Singapore, and at the same instant a ship leaves Singapore for Los Angeles.

Each trip lasts exactly eight days.

How many