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Dmitrij [34]
3 years ago
14

The oldest child in a family of four children is twice as old as the yougest. The two middle children are 12 and 15 years old. I

f the average age of the children is 12.75 , how old is the youngest child?
Mathematics
1 answer:
vesna_86 [32]3 years ago
3 0

Answer:

8 years old

Step-by-step explanation:

oldest= 16

8+12+15+16= 51

51/4 = 12.73 ( average)

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Step-by-step explanation:

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suppose you are the financial manager of the International Emirates University IEU. And you are requested at the end of the year
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So what this is is
many words

assuming year 0 is 2017

so compound first thing till 2020, take out 30000
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remaining is compounded for 1 more year and that is equal to 80000

so from 2017 to 2020, that is 5 years
from 2020 to 2022 is 2 years
from 2022 to 2023 is 1 year


work backwards

A=P(r+1)^t
last one
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80000=P(1.08)^1
divide both sides by 1.08
I would leave in fraction
20000000/27=P

now that is the remaining after paying 50000, after 2 years of compounding

so
50000+(2000000/27)=P(1.08)^2
solve using math
about
106374=P

now reverse back

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paid 30000

30000+106374=P(1.08)^5
solve using math
92813.526=P
round
$92813.53




put $92813.53 in the fund
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Is 0.65 repeating greater than or less than 13/20?
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Step-by-step explanation:

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