Comprehension Passage
Directions: Study the following data carefully and answer the questions.
The data provided below relates to the usage of water, electricity, and gas (in units) in a household during five different months: August, September, October, November, and December.
The table below shows the average usage of water, electricity, and gas; the average usage of electricity and gas; and the usage of electricity as a percentage of gas in each of the given months.
| Months | Average usage of water, electricity, and gas (in units) | Average usage of electricity and gas (in units) | Usage of electricity as a percentage of gas (in units) |
| August | 30 | 27 | - |
| September | - | - | 80% |
| October | 35 | - | 200% |
| November | 30 | 25 | - |
| December | - | 27 | 125% |
Note: Some data in the table is missing and needs to be calculated in the questions.
If the usage of electricity in November is equal to that in December, what is the ratio of the usage of gas in December to that in November?
1
8:7
2
4:3
3
12:11
4
3:2
5
6:5