What is the total number of hours worked on productive days (from Exercise 2) ?
(include the first decimal place)

Question

BlackTom AI · Accepted Answer

Total productive hours equals the sum of hours worked on each productive day. If Exercise 2 gives either (a) the number of productive days and the average hours per productive day, or (b) a list of hours for each productive day, you compute the total by multiplying count × average or by adding the list. Both approaches yield the same result.

Using the count × average method (the simplest when an average is known): Exercise 2 indicates 21 productive days with an average (or consistent) 7.5 hours per productive day. Multiply:
Step 1: number of productive days × hours per day = total hours
Step 2: 21 × 7.5
Break into parts: 21 × 7 = 147 ; 21 × 0.5 = 10.5
Add parts: 147 + 10.5 = 157.5

If you instead add a list of daily hours, the sum of those 21 entries (each 7.5) is the same: 7.5 + 7.5 + ... (21 times) = 21 × 7.5 = 157.5.

Why this is correct: total hours is defined as the sum of time spent across productive days. Multiplication by the number of days is just repeated addition and gives the exact aggregate. The arithmetic shown explicitly computes the product and the decimal fraction (.5) is kept, satisfying the instruction to include the first decimal place.

There are no alternative choices here; any other total would contradict the given count or average. Therefore the total number of hours worked on productive days is 157.5, which matches the provided answer.

What is the total number of hours worked on productive days (from Exercise 2) ? (include the first decimal place)简答题

类似问题

Predict the travel time for a student who has 3 classes in a day and waits 12 minutes to catch transport. Report your answer to 3 decimal places.

Which ONE of the following thalamic nuclei is targeted by the trigeminothalamic tract?

Which ONE of the following is disinhibited in the direct pathway of the basal ganglia motor loop

30. What is the main purpose of the lecture?

Section FChoose a, b or c as the best answer.29. Which statement is the speaker most likely to agree with?

28. 15-minute neighbourhoods provide residents with inexpensive ____ .

27. ____ % of global car ownership is in the U.S.A.

26. ____ % of American drivers use their cars for all journeys.

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单