Hello...
Tony and his three friends live in Albuquerque, New Mexico, but they all attend college in Boston, Massachusetts. Because they want to have a car at school this year, they are planning to drive Tony's car from Albuquerque to Boston at the beginning of the school year. Although they'll each pay for their own food during the road trip, the friends plan to split the costs for gas and hotels evenly between the four of them.
Estimate the total cost that each friend will have to pay for gas and hotels. Explain how you got your answer. Here are some figures that may help you out:
•Tony's car can travel 28 miles for each gallon of gas.
•The average fuel cost at the time of their trip is $3 per gallon.
•They plan to drive about 650 miles each day.
•They estimate the average cost of a hotel each night is $85.
•They will drive approximately 2,240 miles to get from Albuquerque to Boston.
Solution:
Cost of Gas:
2240 / 28 x 3 = $240
Cost of Lodging:
85 x floor2240 / 650 = $255
Cost of both: $240 +255 = $495.
The cost for a 1/4 share is $495/4 = $123.75.
Answer:
1. A
2. C
Step-by-step explanation:
1.The mean is the best measure when the data is not skewed and when it has no outliers. If it is skewed or has outliers, we need to use something like the median or mode. In this case, the most clustered and normal data, with no outliers, is choice A.
Why not B: It has an outlier at 3.
Why not C: It's all over the place, near 70 and then near 25ish.
Why not D: There's a huge outlier at 301 that will bring up the mean, which isn't accurate to the actual center.
2.The mode is most helpful when there is repeating data. In this case, the one that works is choice C, because it has a clear mode of 36.
Why not A or D: They don't have clear modes, because they have two values that have more than one occurence.
Why not B: It has no mode.
Answer:
There are 1240 students at Washington middle school.
Step-by-step explanation:
Percentages and Portions
We can find portions of a whole by correctly managing the percentages of each part. We know 25% of all students at Washington middle school were on the honor roll. From that portion, 60% of the students are seventh graders. That means 40% of the 25% are eight graders, i.e. 40*25%=10% were from eight grade.
We have 10% of all students are 124, thus the number of students are 124/10%=1240
There are 1240 students at Washington middle school.
Let's test the answer. 25% of 1240 students are on the honor roll, which is 310 students. 40% of 310 students are from 8th grade, 40%*310 = 124 as stated in the problem
Answer:
$7.50
Step-by-step explanation:
His normal pay is $15/h
Find the OT pay:
OT pay is 150% of his normal pay. Convert 150% to a decimal by dividing by 100 to find the rate in decimal form.
150%/100 = 1.5
Multiply his normal pay by the rate in decimal form.
$15 X 1.5 = $22.5
His OT pay is $22.5/h.
Additional money
= (OT pay) - (Normal pay)
= $22.5 - $15
= $7.5
We always use two decimal places for money.
$7.5 = $7.50
For every hour he works over 40 hours, he is paid an additional $7.50.
