exam Maths Puzzle Numerical Ability

simple equations using *

2=3g/4
4w/5=5/2
1.2-0.9=2r/3

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exam Other Question

At a school play, 750 tickets were sold. Each adult paid $0.75 admission, and each student, $0.50. How many adults attended, if the receipts were $437.50? Q. Let f(x)=(x-1)^3 (x+2)^4(x-3)^5(x-6)divided by X^2(x-7)^3

Solve the following inequality
I) f(x)>0
II) f(x)> or =o
III) f(x)<0
IV) f(x)<