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estimate:
5. 18% of 246
6. 145% of 81
7. 71% of324
8. 56% of 65.4
9. theresa makes a long distance phone call and talks for 50 minutes. of these minutes, 25% were spent talking to her brother. woud the time spent talking with her brother be about 8,12, or 15 minutes? explain your reasoning.


Write an equation for each proble. then solve. round to the nearest tenth if necessary.
10. find 14% of 64.
11. what number is 36% of 294?
12. 82% of what number is 73.8?
13. 75 is what percent of 50?

Sagot :

icarlson
Estimate 

5. 49.2 this is actually 20% but its close enough to estimate 

6. 120 this is closer to 150%

7. 226.8 this is 70%

8. 36 this is closer to 55%

9. It would be closer to fifteen minutes because 25% = 1/4 and 15/45 = 25% and 45 minutes is close to 50 min

write an equation

10. 14% = .14    so .14×64 = 8.96

11.    x = .36 × 194    x = 69.84

12.   .82x = 73.8   divide each side by .82     x = 90

13.   75 = 50x   divide each side by 50    x = 1.50 or 150%
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