exam Maths Puzzle Numerical Ability

The annual cost in dollars for removing p% of the toxix chemicals from a town's water supply is given by the formula C(p)=500,000/100-p

a)Use the accompanying graph to estimate

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exam Other Question

If you have a 5% solution and a 50 % solution how much of each solution do you need to make 20ml of 30% solution? Hi! I need some help to solve for x.

4(x+5)-8x= -2(x-2

and

5-x=3(2-x)+2x

Thanks in advance for your help!