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Solve.
1.If Justin scored 75% on a 20 point test, how many points did he miss? How many
points would he earn if he scored a 90%?
2. I have collected 10 cans of food. I am 50% complete with my final goal. How many
cans do I want to collect?
3.
I am saving my money for a P750.00 video game. If I have saved 25% of the money
I need, how much money have I saved?
4.May ran a race. She paused for water 25% of the way through the race. She
stopped to tie her shoe 40% of the way. Her friends were cheering her 90% of the
way through the race. Draw a diagram to show where these events took place
7mba dance
Solve.
1.If Justin scored 75% on a 20 point test, how many points did he miss? How many
points would he earn if he scored a 90%?
2. I have collected 10 cans of food. I am 50% complete with my final goal. How many
cans do I want to collect?
3.
I am saving my money for a P750.00 video game. If I have saved 25% of the money
I need, how much money have I saved?
4.May ran a race. She paused for water 25% of the way through the race. She
stopped to tie her shoe 40% of the way. Her friends were cheering her 90% of the
way through the race. Draw a diagram to show where these events took place
7mba dance
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Answers & Comments
1. Solve for points correct:
Rate = 75%, Base = 20, Percentage = ?
Solve for Percentage:
Percentage = Base x Rate
= 20 x 75%
Convert percent to decimal by dividing 100%
75% ÷ 100% = 0.75
= 20 x 0.75
= 15
He got 15 points on the test
Then get the number of missing points:
20 points minus 15 points
20 - 15 = 5
-> He missed 5 points
Solve for points if he scores 90%:
Rate = 90%, Base = 20, Percentage = ?
Solve for Percentage:
Percentage = Base x Rate
= 20 x 90%
Convert percent to decimal by dividing 100%
90% ÷ 100% = 0.90
= 20 x 0.90
= 18
-> He got 18 points if he scored 90%
2. Collected = 10 cans
Collected = 50% of the goal
50% of the goal = 10 cans
100% of the goal = 10 x 2 = 20 cans
answer: 20 cans
3. [(750)(25÷100)]
[(750) (0.25)]
[187.5]
answer: you saved P187.5
4. To show where these events took place, we can draw a line first that measures 10 cm for example. This line will be a scale measurement and will be our diagram.
Now get the 25% of 10 cm by multiplying 10 cm to 0.25. The answer should be 2.5 cm and mark that on the 10 cm line. The same will be done to 40% and 90% and the answers should be 4 cm and 9 cm respectively.