exam Maths Puzzle Numerical Ability

It takes Tom 3 hours less to paint a fence than Jim. If the two boys work together, they can paint the fence in 2 hours. How many hours would each boy, working alone, need to paint the fence?

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exam Other Question
The weather news says there is a 30% chance of rain this weekend. Make an area to represent all possibilities. Find the probability that it will rain.
a. No days
b. One day
c. Two days For what value of E does the point (1, 2, -1) sit on the curved surface governed by S(x, y) = x^2 - 3y^2 + 4x - Ey + 6?

a. -1
b. 0
c. 1
d. 3½