Estimate the answer from the table or graph. 5) The number of students at Alder

Question

Estimate the answer from the table or graph. 5) The number of students at Alder High School who studied foreign languages in different years is shown in the bar graph. What is the total number of students who studied a foreign language in 2012? (Assume no student studied two foreign languages). Number of students taking foreign language 50 40 30 20 10 German French 0 Other 2006 2008 2010, 2012 Year 150 A) 90 students B) 150 students C) 130 students D) 170 students Estimate the answer by rounding. 6) 98+37+66+62 18 A) 300 B) 290 C) 280 D) 281 Solve the problem 7) A boxer takes 3 drinks of water between each round for the first four rounds of a championship fight. After the fourth round he starts to take his three drinks plus one additional drink between each of the remaining rounds. If he continues to increase his drinks by 1 after each round, how many drinks will he take between the 14th and 15th round? A) 10 drinks B) 14 drinks C) 19 drinks D) 15 drinks 5) How many triangles (of any size) are there in the figure? A) 12 C) 10 D) 14 29

Explanation / Answer

(5) In 2012 48 students of Spanish language, 38 students of German language, 32 students of French language and 12 students of other languages. Thus total number of students who studied foreign language in 2012 are 130.

(6) The rounding of 98+37+66+62+18 is 281.

(7) Since, boxer takes 3 drinks of water between each of first four round, so he took 12 drinks upto 4th round. Then he increases one drink of water in each of the round upto 15th round.

1st round = 3 drinks

2nd round = 3 drinks

3rd round = 3 drinks

4th round = 3 drinks

5th round = 4 drinks

6th round = 5 drinks

and so on.

15th round = 14 drinks

(8) Total number of triangles = 14.

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