Shop Mathematics, Τόμος 1McGraw-Hill, 1931 |
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Σελίδα 31
... castings . A near - by foundry and machine company offers to make the castings at a price of 5 cts . per pound . The actual cost per pound , however , when the castings are bought from this firm is found to be 13 times the net cost of 5 ...
... castings . A near - by foundry and machine company offers to make the castings at a price of 5 cts . per pound . The actual cost per pound , however , when the castings are bought from this firm is found to be 13 times the net cost of 5 ...
Σελίδα 86
... castings to 24 castings is 30:24 or 5 : 4 . 60. Proportion . - When two ratios are equal , the four numbers ( or terms ) are said to be in proportion . The two ratios 2 : 4 and 8:16 are clearly equal , because we can reduce 8:16 to 2 ...
... castings to 24 castings is 30:24 or 5 : 4 . 60. Proportion . - When two ratios are equal , the four numbers ( or terms ) are said to be in proportion . The two ratios 2 : 4 and 8:16 are clearly equal , because we can reduce 8:16 to 2 ...
Σελίδα 87
... castings , how many pounds will it take to make 13 castings from the same pattern ? Now very clearly , the ratio between the number of castings , " 19:13 , " is the same as the ratio of the weights , or 19 is to 13 as the weight for 19 ...
... castings , how many pounds will it take to make 13 castings from the same pattern ? Now very clearly , the ratio between the number of castings , " 19:13 , " is the same as the ratio of the weights , or 19 is to 13 as the weight for 19 ...
Περιεχόμενα
ARTICLE | 1 |
Improper fractions | 7 |
Reduction to lower terms | 13 |
Πνευματικά δικαιώματα | |
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amount Answer Antilog belt block boiler bolt brake horsepower Calculate castings cent Centigrade centimeters ciphers circle circumference common fraction cutting speed cylinder decimal places decimal point denominator diameter dimes distance divide dividend division dollar efficiency emery wheel equal Example Explanation Fahrenheit feet figure foot force arm formula given heat hoist horsepower improper fraction inclined plane indicated jackscrew lathe lead screw length lever lifted line shaft load logarithmic scale logarithms machine mantissa measure mechanical advantage meter minute mixed number multiply number of teeth pipe piston pounds pressure Problem pull pulley pump quotient raised ratio reduced revolutions per minute rope scale shown in Fig slide rule square inch square root steam engine steel stress stroke subtract surface speed tank temperature threads per inch trial divisor unit volume weight arm whole number width