Ok. Could I have a picture of the question? :)
Hello,
The relationship between the number of hours a plumber works and the total work fee she charges is proportional. Her fee for 5 hours of work is $350.
Which of the following could be combinations of values for the plumber's work hours and total work fee she charges?
Solution:
Find similar ratios to 5/350
Similar Ratios,
1/70
2/140
3/210
3.5/245
4/280
6/420
7.25/507.50
Answers:
B) 3.5 hours and $245
C) 6 hours and $420
D) 7.25 hours and $507.50
Total = 100.00 * (1 + .06/12)^12*20
Total = 100.00 * (1.005)^240
Total = 100.00 *
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3.3102044758
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Total = 331.02
Answer is D
Answer:
7 and 9
Step-by-step explanation:
Assuming that their exam success is independent then
P(both fail) = 1/4 x 2/5 = 2/20 or 1/10