In 0.6, the 6 is in the tenth's place. which means it is the same as 6/10.
now just simplify:
6/10 = 3/5
**
if it were 0.06, it would be 6/100 since 6 is in the hundredths place.
The quantity of each concentrations of 3% and 9% needed to get the desired concentration is 54 milliliters and 27 milliliters respectively
<h3>Simultaneous equation</h3>
Let
- Quantity of 3% needed = x
- Quantity of 9% needed = y
x + y = 81
0.03x + 0.09y = 81 × 5%
0.03x + 0.09y = 4.05
x + y = 81
0.03x + 0.09y = 4.05
From (1)
x = 81 - y
0.03x + 0.09y = 4.05
0.03(81 - y) + 0.09y = 4.05
2.43 - 0.03y + 0.09y = 4.05
- 0.03y + 0.09y = 4.05 - 2.43
0.06y = 1.62
y = 1.62/0.06
y = 27
x = 81 - y
x = 81 - 27
x = 54
Simultaneous equation:
brainly.com/question/16863577
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41 and 47 because there is no multiplication fact for those numbers
The value of Y is equal to 6.
Lets use the formula to solve this, where,
- R is the rate
- W is the number of workers/things
- T is time
- J is number of jobs/things
<em><u>"If it takes 10 seconds for 10 printers to print out 10 pages of paper"</u></em> - here -
W is 10 printers, T is 10 seconds, and J is 10 pages. We can write:
<u><em>"how many seconds will it take 50 printers to print out 50 pages of paper"</em></u><em> - here we use (previously found) to figure out T.</em>
<em></em>
So it will take 10 seconds for 50 printers to print 50 pages.
ANSWER: 10 seconds