exam Maths Puzzle Numerical Ability

3(x+8)=36
3x+24=36
3x=36-24
3x=12
x=12/3
x=4

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exam Other Question

Solve the formula for h: V=1/3 Bh
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Pat It cost maurice $102 to buy refreshment for 6 people. It cost Sue $162 to buy refreshment for 10 people at the same restaurant. write the linear equation of the line that would pass throught (6,102) and (10,162)