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Word Problems

How long is her book? Solution: Let x be the total number of pages in the book, then she finished frac23cdot x pages. Then she has x-frac23cdot xfrac13cdot x pages left.

Therefore the distance between stations B and C is 48 km. B) By the time of the meeting at station C the freight train rode for frac4836 frac560 hours, i.e. 1 hour and 25 min.

So we have to consider both cases. 1st case. The stop was planned. Let us consider only the trip from C to B, and let x be the number of hours the driver spent on this trip. Therefore A_1 18 A_2x(x - 3) 18 (x 1 x - 2)x2 - 3x 18 x2 x - 2x - 22x 20x 10. So, the sides of the rectangle are 10 cm and (10 - 3) 7 cm long.

Then Mary and Lucy picked 2x and x2, respectively. So x2xx2264x24x6Therefore, Peter, Mary, and Lucy picked 6, 12, and 8 kg, respectively. Problem 3, sophia finished frac23 of a book. She calculated that she finished 90 more pages than she has yet to read. The You-Risk-It Fund (Fund Y) yields 14 interest. The Extra-Dull Fund (Fund X) yields 6 interest. Because of college financial-aid implications, you don't think you can afford to earn more than 4,500 in interest income this year. Problem 10 The distance between stations A and B is 148 km. An express train left station A towards station B with the speed of 80 km/hr. At the same time, a freight train left station B towards station A with the speed of 36 km/hr.