First, change everything into minutes.
12 noon is 12 by 60 which = 720 minutes.
9am is 9 by 12 which = 540 minutes.
X is now your number of minutes before noon.So noon - x is the next step:
720 - x
20 minutes ago it was 720 - x - 20
720 - x - 20= 540 + 3x (3x because you're looking for 3 times as many minutes)
720 - 20 - 540=4x (you combine all the like numbers and variables)
160 = 4x
160/4= x
40 = x
Your answer is 40 minutes
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Hello! 300 cars were manufactured in August, and 5% fewer cars were made in September, compared to August. 5% fewer only means 5% less of the number 300, which means that in September, it made 95% of the amount of cars made in August. For this, what we do is multiply 300 by 95%. 300 * 95% (0.95) is 285. Now, what we do is subtract both numbers from each other to find the difference. 300 - 285 is 15. There. The difference of the amount of cars made in the two months is 15.
20+20+24+24+30+30=148 square meters
You would do 5^2•3.14
Which would equal 78.5
So D is ur answer