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balu736 [363]
3 years ago
9

A pound of popcorn is popped for a class party. The popped corn is put into small popcorn boxes that each hold 120 popped kernel

s. There are 1,600 kernels in a pound of unpopped popcorn. If all the boxes are filled except for the last box, how many boxes are needed and how many popped kernels are in the last partially filled box?
Mathematics
2 answers:
Aleksandr [31]3 years ago
5 0
13 of the boxes would be entirely filled, so 14 boxes would be needed in total. There would be 40 popped kernels in the last box.
Phantasy [73]3 years ago
3 0
1600 / 120 = 13.3
You will need 14 boxes.

120 x 0.3 = 36
There were 36 kernels in the partially filled box.
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In a journey of 15 miles, two third distance was travelled with 40 mph and remaining with 60 mph. How much time does the journey
Ad libitum [116K]

The first step in solving this question is to split the journey into 2 parts. In the first part of the journey, \frac{2}{3} \times 15 = 10 miles are covered at a speed of 40 mph. In the second part the journey 5 miles are covered at a speed of 60 mph.

The equation to compute the time of a journey  given the speed and distance is t=\frac{d}{s} where t is the time, s is the speed and d is the distance.

The time for the first part of the journey is calculated as shown below,

t=\frac{d}{t} \\t=\frac{10m}{40mph} =\frac{10}{40} h.

The time for the second part of the journey is calculated as follows,

t=\frac{d}{t} \\t=\frac{5m}{60mph} =\frac{5}{60} h.

The total time is the sum of the times taken to cover each part of the journey and is calculated as shown below,

t=\frac{10}{40} h+\frac{5}{60} =\frac{30+10}{120} h=\frac{40}{120}h =\frac{1}{3} h

The time to cover the journey is a third of an hour or 20 minutes.

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3 years ago
PLEASE HELP!! If the dimensions of a circle are increased by a factor of 3 (tripled), how will the area of the circle be affecte
kolezko [41]
I can't tell if this is what you were asking for, but I included some explanations.

7 0
4 years ago
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BigorU [14]

Answer:

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Step-by-step explanation:

get sides: 15, 18

multiply sides by 1/3: 5, 6

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Answer:

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