Mathematics, 24.04.2020 14:39 Lowkeycaleb
Bertha buys electricity from a company that offers a choice of two tariffs. Both have a daily charge of $0.20 regardless of how much electricity is used. The ‘standard’ tariff charges $0.10 for each unit used, while the ‘day/night tariff’ charges $0.12 for each unit consumed between 06:00 and 22:00 but only $0.05 for each unit consumed between 22:00 and 06:00, when total demand on the electricity network is low. Bertha is currently on the standard tariff. What is the highest proportion of her total electricity consumption that Bertha’s daytime use can be, so that she would not be paying more if she switched to the ‘day/night’ tariff?
A. 5/17
B. 2/5
C. 5/7
D. 17/20
Answers: 2
Mathematics, 21.06.2019 15:30
Afurniture store has 1,500 chairs in storage. a manager uses three delivery receipts to simulate samples to check 100 chairs and note the number of brown chairs. suppose the actual number of brown chairs is 1,080. about how many brown chairs are
Answers: 1
Mathematics, 21.06.2019 19:50
The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?
Answers: 2
Bertha buys electricity from a company that offers a choice of two tariffs. Both have a daily charge...
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