Nickels is 0,05 of dolar - n
dimes is 0,1 o dolar -d
quarters is 0,25 of dolar -q
dimes =2nickels
d=2n
quarters=2dimes
q=2d=4n
12,5=n(0,05)+2n(0,1)+4n(0,25)
12,5=0,05n+0,2n+n
12,5=1,25n
n=10
q=4n=40
There are 40 quarters
Answer:
15
Step-by-step explanation:
If 20 questions are worth 2 points ,the rest will be worth 4 point questions ....its 35-20 which is 15
Answer:
90
Step-by-step explanation:
as his dog eats 1/3 of a pound per day you times 30 by 3 and you get your answer
Answer:
49/83 = m
Step-by-step explanation:
49=83m
Divide each side by 83
49/83 = 83m/83
49/83 = m
Answer:
there were 82 adult tickets and 32 children tickets that were sold
Step-by-step explanation:
x = adult's tickets
y = children's tickets
x + y = 114
y = -x +114
replace y by -x +114 in the second equation
11x + 6y = 1094
11x + 6(-x + 114) = 1094
11x -6x + 684 = 1094
5x + 684 = 1094
5x = 410
x = 82
x + y = 114
82 + y = 114
y = 32
