First change the percent to a decimal 10% = 0.1 8.5% = 0.085
then subtract 20 - 0.1 = 19.9
then add 19.9 + 0.085 = 19.985
hope it help ☺
Answer:
90
Step-by-step explanation:
The total number of "ratio units" is 9+6 = 15, so each one must stand for 225/15 = 15 people. Then 6·15 = 90 people were snowboarders who bought season passes.
Answer:
c =4 4/9 minutes
Step-by-step explanation:
The formula is
1/a + 1/b = 1/c where a and b is the time for each working alone and c is the time working together
1/8 + 1/10 = 1/c
Multiply by 40c to clear the fractions ( 40c is the least common multiple)
40c(1/8 + 1/10 = 1/c)
5c + 4c = 40)
9c = 40
Divide by 9
9c/9 = 40/9
c =4 4/9 minutes
a: -2x+1
b: no solution
c: x=0
d: x=1/2 (x=0.5 in decimal form)
By making three groups, you can take all the information and find out how many people like each drink, there are 47 people in each group, so 47 people are accounted for. 50-47=3.
