Full resolution (JPEG) - On this page / på denna sida - Arithmetic - Proportions - Compound proportions
<< prev. page << föreg. sida << >> nästa sida >> next page >>
Below is the raw OCR text
from the above scanned image.
Do you see an error? Proofread the page now!
Här nedan syns maskintolkade texten från faksimilbilden ovan.
Ser du något fel? Korrekturläs sidan nu!
This page has never been proofread. / Denna sida har aldrig korrekturlästs.
i8 PROPORTION.
Solution
:
15
12
1
Men 6 Days 8 Hours.
" x " iy
2 "
% W X? l
1 n %
8 Days.
Example 2.
A steam engine of 25 horse power is using 1500 pounds of
coal in 1 day of 9*4 working hours. How many pounds of coal
in the same proportion will be required for 2 steam engines each
having 30 horse power, working 6 days of 12% hours each day ?
Solution
:
1 Machine 25 Hp. 1,500 pounds 1 Day 9% hours.
2 30 " x " 6 " 12% "
«
30
X
1
im 300
2
6 "
1 P
l
£0 6
? 2
1 19 P* x?% ^ 2
l 2 2
28,800 pounds of coal.
Example 3.
A piece of composition metal which is 12 inches long, 3J£
inches thick and 4>£ inches wide, weighs 45 pounds. How many
pounds will another piece of the same alloy weigh, if it meas-
ures 8 inches long, 1% inches thick and 6U inches wide?
12" long, sy" thick, ±y
2 " wide, 45 pounds.
1* " 6^
X 45
n ? ?
$y
2 m i
M PA P
i ? i
i % i
2 45
22 y
2 pounds.
<< prev. page << föreg. sida << >> nästa sida >> next page >>
