book Maths Puzzle Numerical Ability

Can you pl;ease tell me if I have done this problem correctly? I just feel like is is off. The problem is as follows:

A sum of $2000 is split between two investments, one paying

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book Other Question

If John paints a house in 4 hours and Cindy paints a house in 6 hours, how long would it take them if they painted the house together??
HELP! 1.)
Find three consecutive odd integers such that the sum of the first and third is 37 more than the second.

2.)
The sum of 4 consecutive integers is at least 114. Find the smallest possible values for the four numbers.