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12Understand, Write, and Use Ratios and Proportions Unit
103-B4-1 103-B4-2
Word Problems (1) 2. Solve the word problems.
1. Solve the word problems. a. 12 watermelons cost $270. How much do 20 watermelons cost?
The ratio of Ann’s money to Ryan‘s money is 4 . If Ann has $12, how much b. A pump can pump 140 gallons of water in 6 minutes. How long will it take for
7 this pump to fill a bathtub that can hold 350 gallons?
money does Ryan have?
Step 1. What are you trying to find?
Step 2. Find the value of a using a proportion.
Step 3. Find the value of a using a cross product. How much money does Ryan
have?
Objective Learn how to solve word problem Objective Learn how to solve word problem
related to proportion. related to proportion.
Textbook Reference Activity 2 Textbook Reference Activity 2
103-B5-1 103-B5-2
Word Problems (2) 2. Solve the word problems.
1. Solve the word problems.
The ratio of the number of apples Ann picked in one day to the number of apples a. The ratio of Thomas’s money to Ricky’s money is 5 . If Thomas has $20, how
2
Ricky picked in one day is 5 . If Ann picked 30 apples, how many apples in total much money do Thomas and Ricky have in total?
4
did Ann and Ricky pick in one day?
Step 1. What are you trying to find?
Step 2. Find the value of a using a proportion.
b. The ratio of the length of a yard to its width is 7 . If the length of the yard is
8
56 m, what is the perimeter of the yard?
Step 3. Use a cross product to find the value of a. If Ann picked 30 apples, how
many apples did Ricky pick?
Step 4. How many apples in total did Ann and Ricky pick in one day?
Objective Learn how to solve word problem Objective Learn how to solve word problem
related to proportion. related to proportion.
Textbook Reference Activity 2 Textbook Reference Activity 2
6A Unit 12 177
103-B4-1 103-B4-2
Word Problems (1) 2. Solve the word problems.
1. Solve the word problems. a. 12 watermelons cost $270. How much do 20 watermelons cost?
The ratio of Ann’s money to Ryan‘s money is 4 . If Ann has $12, how much b. A pump can pump 140 gallons of water in 6 minutes. How long will it take for
7 this pump to fill a bathtub that can hold 350 gallons?
money does Ryan have?
Step 1. What are you trying to find?
Step 2. Find the value of a using a proportion.
Step 3. Find the value of a using a cross product. How much money does Ryan
have?
Objective Learn how to solve word problem Objective Learn how to solve word problem
related to proportion. related to proportion.
Textbook Reference Activity 2 Textbook Reference Activity 2
103-B5-1 103-B5-2
Word Problems (2) 2. Solve the word problems.
1. Solve the word problems.
The ratio of the number of apples Ann picked in one day to the number of apples a. The ratio of Thomas’s money to Ricky’s money is 5 . If Thomas has $20, how
2
Ricky picked in one day is 5 . If Ann picked 30 apples, how many apples in total much money do Thomas and Ricky have in total?
4
did Ann and Ricky pick in one day?
Step 1. What are you trying to find?
Step 2. Find the value of a using a proportion.
b. The ratio of the length of a yard to its width is 7 . If the length of the yard is
8
56 m, what is the perimeter of the yard?
Step 3. Use a cross product to find the value of a. If Ann picked 30 apples, how
many apples did Ricky pick?
Step 4. How many apples in total did Ann and Ricky pick in one day?
Objective Learn how to solve word problem Objective Learn how to solve word problem
related to proportion. related to proportion.
Textbook Reference Activity 2 Textbook Reference Activity 2
6A Unit 12 177
