Physical ArithmeticMacmillan, 1885 - 357 páginas |
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Página 14
... Suppose that the old price is n shillings = lb. ( 1 ) the change may be a shillings advance = lb. or a shillings reduction = lb. ; therefore the new price is na shillings per lb. ( 2 ) From ( 1 ) and ( 2 ) we deduce na shillings new ...
... Suppose that the old price is n shillings = lb. ( 1 ) the change may be a shillings advance = lb. or a shillings reduction = lb. ; therefore the new price is na shillings per lb. ( 2 ) From ( 1 ) and ( 2 ) we deduce na shillings new ...
Página 15
... Suppose bought apples ; then he spent pence . 6 65 X - x bought 65 apples ; .. he spert pence . 5 X 65 - X Hence + = 12 ; 6 5 And B from which x = 30. Hence A bought 30 apples , and B 35 . Ex . 4. — If 3 ducks be worth 4 PRICE . 15.
... Suppose bought apples ; then he spent pence . 6 65 X - x bought 65 apples ; .. he spert pence . 5 X 65 - X Hence + = 12 ; 6 5 And B from which x = 30. Hence A bought 30 apples , and B 35 . Ex . 4. — If 3 ducks be worth 4 PRICE . 15.
Página 18
... Suppose that a grocer buys at the rate of m pence cost = dozen eggs , and sells at the rate n pence receipt = dozen eggs ; from these two rates we deduce a third , viz . : — n pence receipt = m pence cost . ( 1 ) ( 2 ) ( 3 ) Again ...
... Suppose that a grocer buys at the rate of m pence cost = dozen eggs , and sells at the rate n pence receipt = dozen eggs ; from these two rates we deduce a third , viz . : — n pence receipt = m pence cost . ( 1 ) ( 2 ) ( 3 ) Again ...
Página 22
... Suppose that a tea - dealer forms a mixture out of three kinds of tea , which we shall distinguish as A , B , C. Suppose that he takes a lbs . of A , b lbs . of B , c lbs . of C and mixes them thoroughly . The composition of the ...
... Suppose that a tea - dealer forms a mixture out of three kinds of tea , which we shall distinguish as A , B , C. Suppose that he takes a lbs . of A , b lbs . of B , c lbs . of C and mixes them thoroughly . The composition of the ...
Página 23
... Suppose that the cost price of A tea is p shillings per lb .; of B , q shillings per lb. ; and of C , r shillings per lb. Then the cost of the a lbs . of A taken is pa shillings ; of the b lbs . of B , qb shillings ; of the c lbs . of C ...
... Suppose that the cost price of A tea is p shillings per lb .; of B , q shillings per lb. ; and of C , r shillings per lb. Then the cost of the a lbs . of A taken is pa shillings ; of the b lbs . of B , qb shillings ; of the c lbs . of C ...
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acid acres amount ampere angle axis C.G.S. system C.G.S. unit Calculate cent Centigrade centimetres College constant copper cross-section Crown 8vo cubic centimetres cubic feet cubic foot cubic inches deduce degrees denote density diameter distance dyne Edition electricity electromotive force ELEMENTARY equal equivalent EXAMPLES EXERCISE Extra fcap Fahr Fahrenheit Fcap feet long feet per sec feet per second foot-pounds force francs gallon grains grammes Hence horizontal horse-power hydrogen increment intensity of gravity interval kilogramme liquid litres magnetic mercury metre miles an hour miles per hour millimetre minute ohms oxygen pence plane pound poundals pressure Professor quantity radian radius resistance second per second SECTION shillings silver solid specific gravity specific heat speed square inch standard substance Suppose surface temperature thick TREATISE velocity vibrations volume water by deg weight wire yards
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