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3 years ago

How many defective telephones

Mathematics

1 answer:

zhenek [66]3 years ago

5 0

Answer:

Option 3: 300 phones

Step-by-step explanation:

Given

Phone produces each day: 1000

Number of phones that were checked = 30

Defective phones = 9

So the probability of defective phones will be calculated by dividing the number of defective phones by total number of phones checked.

So, the probability of defective phones

= 9/30

= 0.3 or 30%

So, from 1000 phones the defective phones will be:

1000*0.3

= 300 Phones ..

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Answer:

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2 years ago

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2 years ago

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2 years ago

What is the result of increasing 50 by 30%?

kogti [31]

Answer:

50 increased by 30% is 65

Step-by-step explanation:

'Percent (%)' means 'out of one hundred':

p% = p 'out of one hundred',

p% is read p 'percent',

p% = p/100 = p ÷ 100.

30% = 30/100 = 30 ÷ 100 = 0.3.

100% = 100/100 = 100 ÷ 100 = 1.

Percentage increase = 30% × 50

New value = 50 + Percentage increase

Calculate

New value =

50 + Percentage increase =

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(1 + 30%) × 50 =

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130 ÷ 100 × 50 =

130 × 50 ÷ 100 =

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Or just find 30% of 50 (15) and add that

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2 years ago