2012年2月5日日曜日

Where Do You Buy Trigger Fish?

where do you buy trigger fish?

WORD PROBLEMS! 10POINTS? | Humuhumunukunukuapuaa

Shada girl asked:

1. Elena has bought 320 tropical fish for a museum display. She bought 7 times as many triggerfish as parrotfish. How many of each type of fish did she buy? Write a system of equations to model the problem if x represents the number of parrotfish Elena bought, and y represents the number of triggerfish she bought.
x + 7y = 320
y = 7x

x + y = 7
y = 320x

x + y = 320
y = 7x

x – y = 320
y = 7x

2. Elena has bought 320 tropical fish for a museum display. She bought 7 times as many triggerfish as parrotfish. How many of each type of fish did she buy?
280 parrotfish, 40 triggerfish


Triggerfish Twist
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Tim Dorsey

180 parrotfish, 140 triggerfish

120 parrotfish, 200 triggerfish

40 parrotfish, 280 triggerfish

3. Anita and Joelle bowl together, and their combined total scores for one game was 425 points. Anita's score was 40 less than twice Joelle's. What were their scores? Write a system of equations to model the problem if x represents Joelle's score, and y represents Anita's score.
x + y = 425
y = 2x – 40

x + y = 425
y = 2x + 40

x – y = 425
y = 2x – 40

x + y = 40
y = 2x – 425


Triggerfish Twist (Serge Storms)
Learn more
Tim Dorsey

4. Anita and Joelle bowl together, and their combined total scores for one game was 425 points. Anita's score was 40 less than twice Joelle's. What were their scores?
Joelle: 270, Anita: 155

Joelle: 180, Anita: 245

Joelle: 140, Anita: 285

Joelle: 155, Anita: 270

5. In a single weekend, 840 people visited a local zoo. The number of people who visited on Saturday was 30 more than twice the number of people who visited the zoo on Sunday. How many visitors did the zoo have on each day?
Saturday: 430 visitors
Sunday: 410 visitors

Saturday: 570 visitors
Sunday: 270 visitors

Saturday: 510 visitors
Sunday: 330 visitors



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