30 = 80*t
t = 30/80 = 3/8 hr
3/8 hr * 60 min/hr = 180/8 = 22.5 min
Or this question you should know that:
1/3 = (1*4)/(3*4) = 4/12
and
2/3 = (2*4)/(3*4) = 8/12
so you can see that 7/12 is greater than 4/12 which is 1/3 and less than 8/12 which is 2/3 :))))
i hope this is helpful
have a nice day
Answer:
fred = 45 books
sally has 27 times more book than fred
sally = 45 X 27
= 1215 books
Answer:
The answer is 7
Step-by-step explanation:
3 1/2 ÷ 1/2 = 7