Let c and n represent the numbers of pencil and pen boxes, respectively
.. 3c +2n = 6.00
.. 2c +4n = 8.00
You can halve the second equation and subtract it from the first to get
.. (3c +2n) -(c +2n) = 6.00 -4.00
.. 2c = 2.00
.. c = 1.00
Then
.. 1.00 +2n = 4.00 . . . . . half the original second equation with c filled n
.. 2n = 3.00
.. n = 1.50
A box of pencils costs $1.00; a box of pens costs $1.50.
Answer:
(15 - 7) * (3 + 5)
12
29
Step-by-step explanation:
There are 98 terms.
98*(33+130)/2 = 7987
Answer:
there were 60 people that are under 16 and 190 people above 16.
Answer:
321
Step-by-step explanation:
because 100+221 equals 321
Hope this helped.
