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IRISSAK [1]
3 years ago
15

What is £300 divided into a ratio of 3:7

Mathematics
2 answers:
blondinia [14]3 years ago
7 0
First you add the ratio  together 3+7=10 Then you do £300 divided by 10 = £30 
<span>Then you do £30 X 3 (from the ratio in the beginning) which equals £90 </span>
<span>Then you do £30 X 7 (also from the ratio in the beginning) which equals £210 </span>
<span>The ratio is £90:£210 </span>
<span>Also you can add the ratios up so that it equals £300 the number you started with </span>
<span>£90+£210=£300 </span>
<span>Hope I helped :)</span>
3241004551 [841]3 years ago
5 0
A) sum 3 + 7 =10
b) divide <span> £</span>300 ÷ 10 = <span> £</span>30
c) multiply:
     3 x 30 = <span> £</span>90
     7 x 30 = <span> £</span>210

Values are:  £90 and <span> £210</span>



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B. The school prom committee sold presale tickets for
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Answer:

218 students purchased tickets at the dance.

Step-by-step explanation:

Let,

x be the number of presale tickets

y be the number of tickets sold at the dance

According to given statement;

x+y=334      Eqn 1

18x+24y=7320    Eqn 2

Multiplying Eqn 1 by 18

18(x+y=334)

18x+18y=6012      Eqn 3

Subtracting Eqn 3 from Eqn 2

(18x+24y)-(18x+18y)=7320-6012

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3.14

Step-by-step explanation:

Given that:

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The margin of error is given by:

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Z critical at 90% confidence interval = 1.645

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