Set up the equation of two ratios:
3 racks 36 racks
----------- = --------------
15 min x
Solve this for x: 3x =540; x = 180 minutes, or 3 hours
269 is the answer. Each one is divided by 2.
4304/2=2152
2152/2=1076
1076/2=538
538/2=269
Answer:
the answer is d.
Step-by-step explanation:
first, you want to use the formula,
new value - original value
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original value * 100
you see that 84 is the new value and 79 would be the original value. substitute the numbers in. this is a increase since you will get a positive value.
84 - 79
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79 * 100
now we solve it.
5
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79 * 100
you can either solve the fraction first then multiply that by 100 or multiply the numerator by 100 first then divide that by 79, each way works.
500
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79 = approximately 6.3% increase (this is not a exact value, just rounded)
or
5
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79 = approximately 0.063 (this is not a exact value, just rounded)
0.063 * 100 = 6.3% increase
