Answer:
5 seconds
Step-by-step explanation:
just divide 60 by 12 ( a dozen) and your answer is 5
0.2
60 ÷ 12 = 5 that's how many donuts she eats in 1 second
12 ÷ 60 = 0.2 how long it takes her to eat one donut
The value of a is 70° and b is 20°
A
Equation: 17+x=21
btw x=4