What is the absolute CO2 emission from the domestic sector?
2011
What is the absolute CO2 emission from the domestic sector?
Answer: D. 0.75 mmt — CONCEPTWhen a sector contributes p percent of a total T, its absolute amount is (p/100) × T. A percentage is therefore converted to its decimal fraction…
- A.
1.5 mmt
- B.
2.5 mmt
- C.
1.75 mmt
- D.
0.75 mmt
Show answer & explanation
Correct answer: D
CONCEPT
When a sector contributes p percent of a total T, its absolute amount is (p/100) × T. A percentage is therefore converted to its decimal fraction before multiplication.
APPLICATION
The total CO2 emission is 5 mmt, and the domestic-sector share is 15%.
Convert the share: 15% = 15/100 = 0.15.
Multiply by the total: 0.15 × 5 = 0.75 mmt.
CROSS-CHECK
Dividing the computed amount by the total gives 0.75 ÷ 5 = 0.15; multiplying by 100 gives 15%, which reproduces the domestic-sector share.
RESULT
The absolute CO2 emission from the domestic sector is 0.75 mmt.