exam Maths Puzzle Numerical Ability

Can someone help me with this problem?

I need to find the first and third quartiles, Q1 and Q3, of the following set of numbers:

0.16, 0.08, 0.27, 0.20, 0.22, 0.32, 0.25, 0.18, 0.28, 0.27

Thanks,
Sher

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exam Other Question

#6 p.142
Isocost Equation: We are to buy quantities of two items:n1 units of item 1 and n2 units of item 2.
a. if item 1 costs $3.50 per unit and item 2 costs $ 2.80 per unit, fi The product of two consecutive positive integers is 142 more than the next integer.What is the largest of the three integers?