We first write the fractions in their decimal forms and find out the ratio.
2 1/4 is equivalent to 2.25, and 1 1/3 is equivalent to 1.33.
Ratio will be 2.25 / 1.33 = 1.69 or 1.7 rounded off. Since it cannot be simplified further, then the ratio of mulch to gravel will be 1.7: 1.
Quantity of mulch sold → 1.7/2.7 of 172 →0.629 ×172 = 108.2 pounds.
Quantity of gravel sold will be 172 -108. 2 = <span>63 .8 pounds.</span>
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<span>Hope this helps :)</span>
Answer:
The correct answer is:
(a) Mean = 170,
Standard deviation = 30
(b) 1700
Step-by-step explanation:
Given:
(a)
Mean of monthly expenses will be:
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Standard deviation will be:
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(b)
The total amount of monthly expenses will be:
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I believe its 15 girls.
If its 5 girls to every 4 boys and there is 12 boys then 12 is just 4 three times so you would do 5 three times making it 15.
4boys = 5girls
+4boys= 5girls
+4boys = 5girls
=12boys = 15girls