...gives 42 hours. 40. A sets out and travels at the rate of 7 miles in 5 hours. Eight hours afterwards, B sets out from the same place and travels in the same direction, at the rate of 5 miles in 3 hours. In how many hours will B overtake A ? 41. A person walks to the top of a mountain...

...500 yards. 8. A sets out and travels at the rate of 18 miles in 5 hours. Twelve hours afterwards B sets out from the same place and travels in the same direction, at the rate of 15 miles in 4 hours. In how many hours will B overtake A ? 9. A courier who goes at the rate of 31-^...

...gives 42 hours. 33. A sets out and travels at the rate of 7 miles in 5 hours. Eight hours afterwards B sets out from the same place and travels in the same direction, at the rate of 5 miles in 3 hours. In how many hours will B overtake A ? 34. A person walks to the top of a mountain...

...40|f minutes. 24. A sets out and travels at the rate of 9 miles in 2 hours. Seven hours afterwards B sets out from the same place and travels in the same direction at the rate of 5 miles an hour. In how many hours will B overtake A 1 Let x = the number of hours in which B will...

...solution of which gives 42 hours. 40. A sets out and travels at the rate of 7 miles in 5 hours. Eight hours afterwards, В sets out from the same place and travels in the same direction, at the rate of 5 miles in 3 hours. In how many hours will В " ver tía Ь g AJZ — . 41. A person walks to the top...

...Whence, x = 48J. 40. A sets out and travels at the rate of 7 miles in 5 honra. Eight hours afterwards, B sets out from the same place, and travels in the same direction at the rate of 5 miles lu 3 hours. In how many hours will B overtake A? Let x = number of hours A is travelling. Then...

...together can do a piece of work in a days, A and С in & days, В and С in с days. In what time cau they do it, all working together ? In what time cau...also, | = the number of miles per hour A travels, and JjL = the number of miles per hour В travels. Then, у x = the number of miles В travels, and | (x...

...or 12* = 15x — 75. .'. x = 25. 24. A sets out and travels at the rate of 9 miles in 2 hours. Seven hours afterwards В sets out from the same place and travels in the same direction at the rate of 5 miles an hour. In how many hours will В overtake A ? 25. A man walks to the top of a mountain at...

...work if they all work together ? 88. A sets out and travels at the rate of 9 miles in 2 hours. Seven hours afterwards В sets out from the same place and travels in the same direction at the rate of 5 miles an hour. In how many hours will В overtake A ? 89. A man walks to the top of a mountain at...

...sets out and travels at the rate of 47 miles in 5 hours ; .30 minutes later a second coach starts, out from the same place and travels in the same direction, at the rate of 47 miles in 4£ hours. In how many hours will the second coach overtake the first ? 21. At what time...