# Examples for 8th grade - page 115

1. Father and daughter
When I was 11 my father was 35 year old. Now, father has three times older then me. How old is she?
2. Phone plan
Victoria's cell phone plan costs \$30.00 a month. If she used 12.5 hours in May, how much did Victoria pay per minute?
3. Workers 9
If two workers fix two windows in an hour how many windows can 18 workers fix in the same two windows?
4. Bob traveled
Bob traveled 20 meters to Dave's house. He arrived in 3 minutes. What was his average speed for the trip.
5. Nineteenth member
Find the nineteenth member of the arithmetic sequence: a1=33 d=5 find a19
6. Sales tax
A sales tax on a Php 10,800 appliance is Php.1,620. What is the rate of sales tax?
7. Deposit is pesos
Sally deposits Php.22,000 in her savings account. If the bank pays 1.5% interest per year, how much will she receive at the end of the year?
8. Feet to miles
A student runs 2640 feet. If the student runs an additional 7920 feet, how many total miles does the student run?
9. Tickets 4
Stacey is selling tickets to the school play. The tickets are \$7 for adults and \$5 for children. She sells twice as many adult tickets as children's tickets and brings in a total of \$342. How many of each kind of ticket did she sell?
10. Trip to a city
Lin wants to save \$75 for a trip to the city. If she has saved \$37.50 so far, what percentage of her goal has she saved? What percentage remains?
11. Ages 2
A man's age is 4 times his son's age. After 5 years he will be just twice his son's age, find their ages.
12. An equilateral
An equilateral triangle with a side 10 m represents a wooden platform standing in a lawn. A goat is tied to a corner with a 15 m rope. What is the maximum amount of grazing area available to the goat?
13. Donuts
Find how many donuts each student will receive if you share 126 donuts in a ratio of 1:5:8
14. Real estate 2
A real estate agent sold a lot for Php.550,000. If his agency pays at 10% commission, how much commission will he or she receive?
15. Old laptop
The sale price of an old laptop is Php.11000. If 33 1/3% discount rate is given how much is the sale price of the laptop without the discount? Plese show your solution please. Php is Philippine peso
16. 1.5 divided
1.5 divided by 1 = w divided by 4
17. Loan 4
Mr santos borrowed Php.18,000 at 1.5% interest for one year. What was the total amount he paid for the end of the 1-year term?
18. Find sales tax
What is 8.25% sales tax out of 1607.00?
19. The sales
The sales tax rate is 4.447​% for the city and 4​% for the state. Find the total amount paid for 2 boxes of chocolates at ​\$17.96 each.
20. On the 4
On the way to playing disc golf with his two boys, Mr. Smith purchases 3 muffins and 2 bottles of water, totaling \$9.75. The following week he only has Asher with him, so he purchases 2 muffins and 1 bottle of water totalling \$6.00. What is the cost of on

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