Answer
39 bills of 1$
16 bills of 10$
Step-by-step explanation:
x-nr of $1
y-nr of $10
x*1+y*10=199
x+y=55 , x=55-y
so I use the substitution method
(55-y)*1+10y=199
55+10y-y=199
-55 -55
9y=144
y=144/9
y=16
so x=55-16
x=39
verify 16*10+39*1=160+39=199
4/10 is equal to 2/5 because if you reduce 4/10 you get 2/5 which shows that they are equal.
You should use a protractor to help you with this answer; without one it's really hard to draw a 62 degree angle on your own. Sorry!!!
