A Key to the Standard Arithmetic and the Mental Arithmetic

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American Book Company, 1901 - Arithmetic - 272 pages
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Page 53 - A person, being asked the time of day, replied, " The time past noon is equal to ^ of the time to midnight.
Page 5 - A and B can do a piece of work in 4 days, B and C in 5J days, and A and C in 44 days.
Page 5 - J of it in 1 day, how much would both do in a day ? How long would it take them both together to do the whole ? 147.
Page 161 - The volumes of similar solids are to each other as the cubes of their like dimensions.
Page 53 - ... f of the time to midnight equals the time from noon to midnight, which is 12 hours; consequently of the time to midnight is f hours, and the time to midnight is -^ hours, equal to 7 hours.
Page 5 - What is the interest of 100 and 37 dollars for 2 years 3 months and 20 days ? 144. A can do a piece of work in 2 days ; how much of it can he do in 1 day ? 145. B can do a piece of work in 4 days; how much of it can he do in 1 day? 146. If A can do of a piece of work in 1 day, and B can do | of it in 1 day, how much would both do in a day...
Page 149 - The areas of similar surfaces are to each other as the squares of their like dimensions.
Page 140 - The head of a fish is 7 inches long, the tail is as long as the head and |- of the body, and the body is as long as the head and tail ; what is the length of the fish ? 9.
Page 30 - The amount of a certain principal for 5 years at a certain rate is $665, and for 8 years at the same rate it is 1779.

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