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rusak2 [61]
3 years ago
6

Daniel can eat 4 ice cream sandwiches in 30 minutes. His brother can eat double that amount. How many ice cream sandwiches can h

is brother eat per minute?
Mathematics
1 answer:
Likurg_2 [28]3 years ago
7 0

Answer:

3 minutes and 45 seconds

Step-by-step explanation:

His brother can eat 1 ice cream sandwich every 3 minutes and 45 seconds I found this out by dividing 30 by 8 then I got 3.75 then I converted .75 to 75% of 60 was 45 thus ending up with 3:45

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1)Sheyna drive to the lake and back. It took two hours less time to get there than it did to get back. The average speed on the
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Answer:

8 hours

Step-by-step explanation:

Given:

Sheyna drives to the lake with average speed of 60 mph and

v_1 = 60\ mph

Sheyna drives back from the lake with average speed of 36 mph

v_2 = 36\ mph

It took 2 hours less time to get there than it did to get back.

Let t_1 be the time taken to drive to lake.

Let t_2 be the time taken to drive back from lake.

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To find:

Total time taken = ?

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Solution:

Let D be the distance to lake.

Formula for time is given as:

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Putting in equation (1):

\dfrac{D}{36}-\dfrac{D}{60} = 2\\\Rightarrow \dfrac{5D-3D}{180} = 2\\\Rightarrow \dfrac{2D}{180} = 2\\\Rightarrow D = 180\ miles

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t_2 = \dfrac{180}{36}\ hrs = 5\ hrs

So, the answer is:

t_1+t_2 = \bold{8\ hrs}

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