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3 years ago

6

This science vocabulary quiz has 30 questions. If you want to score an 80% how many questions to do you have to answer correctly

? Btw thank you for all the help!

2 answers:

Aleks04 [339]3 years ago

6 0

24. That’s the answer thanks for your time folks

inysia [295]3 years ago

5 0

Answer: 24 questions

Step-by-step explanation:

10% of 30 = 3

3 × 8 = 24

Also, 80/100 = 24/ 30 if you cross multiply. I hope I am right.

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3 years ago

a sandwich shop has 60 stores and 70 percent of the stores are I California. How many stores are in California and Nevada

Aliun [14]

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The number of stores in California 42

The number of stores in Nevada 18

Step-by-step explanation:

Given as :

The total sandwich shop in California and Nevada = 60

The percentage of shop in California = 70%

So, The percentage of shop in Nevada = 100% - 70% = 30%

Let The number of stores in California = c

And The number of stores in Nevada = n

Now, According to question

The number of stores in California = 70% of the total number of shops

I.e c = $\frac{70}{100}$ × total number of shops

Or, c = $\frac{70}{100}$ × 60

∴ c = $\frac{70\times 60}{100}$

or, c = $\frac{4200}{100}$

or, c = 42

So, The number of stores in California = c =42

Again

The number of stores in Nevada = 30% of the total number of shops

I.e n = $\frac{30}{100}$ × total number of shops

Or, n = $\frac{30}{100}$ × 60

∴ n = $\frac{30\times 60}{100}$

or, n = $\frac{1800}{100}$

or, n = 18

So, The number of stores in Nevada = n = 18

Hence The number of stores in California 42

And The number of stores in Nevada 18 Answer

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4 years ago