John’s father is 5 times older than John and John is twice as old as his sister Alice. In two years time, the sum of their ages
will be 58. How old is John
1 answer:
Answer:
8 years
Step-by-step explanation:
Let age of father be f
age of John be j
age of Alice be a
John's father is 5 times as old as John. We can write:
f = 5j
John is twice as old as Alice. We can write:
j = 2a
or
a = j/2
SUM OF ALL OF THEIR AGES (after 2 years) will be 58. We can write:
f+2 + j+2 + a+2 = 58
This becomes:
f + j + a + 6 = 58
f + j + a = 52
Now, we replace third equation with the first two (in bold) and get:
So John is 8 years old
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Hey~
Possibly C.
It makes the most sense.
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Their ages are 18, 19, and 20 bc we is gud at maths boi
Answer:
Step-by-step explanation:
To write this sentence as equation
We get
r×338+97=r
338r+97=r
To solve further
r-338r=97
-337r=97
r=-0.2878
first is 86
we know because of the sum of the interior angles of a triangle being 180, and that 5 + 6 =180