exam Maths Puzzle Numerical Ability

I have a problem similar to question 159178 but it includes an extra fund in which the total available is to be invested. (instead of 2 there are 3 differnt funds x,y,z)
how do i

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exam Other Question

I do not understand these.
Please help me.

A) It takes r cm of ribbon to make a bow. We have s meters of ribbon. How many bows can we make?

B) 20% of 3x+12=P. What is 120% of 5x+20?

Thankyou
(t^3-3t^2+5t-6)/(t-2)