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Irina-Kira [14]
3 years ago
10

A father is 60 years old and his son is half his age. how old was the boy when his father was four times his age?

Mathematics
2 answers:
Natalka [10]3 years ago
7 0
Ok so
fater=60
son is 1/2
60 times 1/2=30
they aer 30 years apart

how long ago was father age 4 times son age
father's age x year ago=60-x
son's age x years ago=30-x

60-x=4(30-x)
distribute
60-x=120-4x
add 4x to both sides
60+3x=120
minus 60 from both sides
3x=60
divide both sides by 3
x=20
20 years ago

30-20=10

the boy was 10 years old
Arte-miy333 [17]3 years ago
4 0
He was 10 while his father was 40
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Gennadij [26K]

Multiplication is helps to add a number multiple times. The meaning of  6 x 5 is 6 + 6 + 6 + 6 + 6.

<h3>What is multiplication?</h3>

Multiplication tells us the number of times a number is been added to itself. For example, 3 x 2 = 3 + 3 = 2 + 2 + 2

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As we have already discussed that multiplication is the number of times a number is been added to itself. therefore,

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1 year ago
Can someone pls helppp
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Answer:

The answer is 64.

Step-by-step explanation:

Lets say the top row is <em>x</em> and the bottom row is <em>y</em>.

Since when <em>x</em> is 13 <em>y</em> is 104 and when <em>x</em> is 14 <em>y</em> is 112 that means the <em>y </em>value goes up by 8 every time.

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when x=4: 24+8=32

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when x=6: 40+8=48

when x=7: 48+8=56

when x=8: 56+8=64

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