Let us say that:
K = age of Kristen
B = age of Ben
From the problem, we make the equations:
eqtn 1: K + B = 32
eqtn 2: (K – 4) = 2 (B – 4)
Simplifying eqtn 2:
K – 4 = 2 B – 8
K = 2 B – 4
Plugging in this to eqtn 2:
(2 B – 4) + B = 32
3 B – 4 = 32
3 B = 36
B = 12
From eqtn 2:
K = 2 B – 4 = 2 (12) – 4 = 20
So Kristen is 20 while Ben is 12.
Answer:
$660
Step-by-step explanation:
You multiply 60 by 4 and get 240
Subtract 240 from 900
Answer:
7x2
Step-by-step explanation:
7x2 is 14 and all the other ones equal 7
Answer:
below
Step-by-step explanation:
I'm pretty sure this is the answer.
Answer:
$2 per minute
Step-by-step explanation:
trust me. :)
Hope this helps!
