Answer:
b = 5/12
Step-by-step explanation:
You have the proportion
1/(3b) = 4/5
Cross multiply to get rid of the fractions...
5 = 12b now solve for b
5/12 = b (divide by 12 on both sides)

Multiplication by 10ⁿ → move decimal n places to the right.
Multiplication by 10⁻ⁿ → move decimal n places to the left.
For n ∈ N
She mows 1/2 an acre per hour
Answer:
$5940
Step-by-step explanation:
19 groups = 19 x 300 = $5700
4 extra tickets = 4 x 60 = $240
$5700 + $240 = $5940
Total people going = 194