Tax, bills & other computational

Tier

Cost to build (inc litre to cc)	Nov 2019 P2 Q2b
Find profit after calc of costs	Nov 2017 P2 Q3
Quarterly electric bill	Summer 2019 P2 Q3a
Electricity bill	Nov 2017 P1 Q4
Tax bill in pesos	Nov 2019 P1 Q4
Find units of gas used	Sam 1 P2 Q6
Calc net income after tax	Sample 2 P1 Q8
Land tax	Summer 2019 P2 Q10
Salary after tax, NI,pension	Sam 1 P2 Q11
Cost to build motorway	Sample 1 P1 Q11