An Arithmetic for Preparatory Schools, High Schools, And Academies
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26. By a pipe of a certain capacity a cistern can be emptied in 3^ hours ; in what time can it be emptied by a pipe, the capacity of which is | greater ?
Compound Proportion.
106. An expression of equality between a compound ratio and a simple ratio, or between two compound ratios, is called a compound proportion.
I. If 4 men dig a trench 84 feet long and 5 feet wide in 3 days of 8 hours each, how many men can dig a trench 420 feet long and 3 feet wide in 4 days of 9 hours each ?
Since the nnsw...er is to be men, make 4 men the tliird term. The : 4 : a;. number of men required depends upon four conditions — the length of the trencli, the width of the ifa ? 2 a /f trench, the number of days, and the ^^ mx^xaxsxf ^g men- number of hours per day; all of 84 : 420 5:3 4:3 9:8 yT-X^XiX9 4, . , -1 1 • . .• g tliesc must be considered ni statmg the problem. A trench 420 ft. long will require more men than a trench 84 ft. hmg, and the first ratio is 84:420; a trench 3 ft. wide will require less men than a trench 5 ft.
What to read after An Arithmetic for Preparatory Schools, High Schools, And Academies?
You can find similar books in the "Read Also" column, or choose other free books by Hobbs, Charles A. (Charles Austin), B. 1857 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
26. By a pipe of a certain capacity a cistern can be emptied in 3^ hours ; in what time can it be emptied by a pipe, the capacity of which is | greater ?
Compound Proportion.
106. An expression of equality between a compound ratio and a simple ratio, or between two compound ratios, is called a compound proportion.
I. If 4 men dig a trench 84 feet long and 5 feet wide in 3 days of 8 hours each, how many men can dig a trench 420 feet long and 3 feet wide in 4 days of 9 hours each ?
Since the nnsw...er is to be men, make 4 men the tliird term. The : 4 : a;. number of men required depends upon four conditions — the length of the trencli, the width of the ifa ? 2 a /f trench, the number of days, and the ^^ mx^xaxsxf ^g men- number of hours per day; all of 84 : 420 5:3 4:3 9:8 yT-X^XiX9 4, . , -1 1 • . .• g tliesc must be considered ni statmg the problem. A trench 420 ft. long will require more men than a trench 84 ft. hmg, and the first ratio is 84:420; a trench 3 ft. wide will require less men than a trench 5 ft.
What to read after An Arithmetic for Preparatory Schools, High Schools, And Academies?
You can find similar books in the "Read Also" column, or choose other free books by Hobbs, Charles A. (Charles Austin), B. 1857 to read onlineMoreLess
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