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lesantik [10]
3 years ago
7

A 1 km long train travelling at a speed of 60km/h enter a tunnel 1km long. What time will the train take to come out of the tunn

el fully.​
Mathematics
1 answer:
zysi [14]3 years ago
3 0

Answer:

2 minutes

Step-by-step explanation:

The front of the train enters the tunnel and travels 1 km before the rear of the train enters the tunnel.  Thus, the total distance traveled by the front of the train is 2 km, and this is covered in a certain number of hours:

Since distance = rate times time, time = distance / rate.  In this particular case we have:

                                              2 km

time = distance / rate = ------------------- = (1/30) hr

                                           60 km/hr

(1/30) hr converts to 2 minutes, since 1 hr = 60 minutes

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NemiM [27]

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Proof :

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6 0
3 years ago
Is 42 a multiple of 7
aev [14]

Answer:

yes

Step-by-step explanation:

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5 0
3 years ago
Read 2 more answers
A store is holding a grand opening promotion. Every 3rd customer receives a free key chain and every 4th customer receives a fre
Archy [21]

Answer:

12th Customer

Step-by-step explanation:

We have to find the lcm (lowest common multiple) of the number.

We do that by taking their multiples. Watch down below

3 x 1 = 3                4 x 1 = 4

3 x 2 = 6               4 x 2 = 8

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See how they both have a 12 as their first lcm.

So the 12th customer gets both items.

Glad to help!

8 0
3 years ago
beau has 15 cans of beetlebots legs there are 8 legs in each can i found 7 more beetle bot legs how can we find the number of le
Natali5045456 [20]

Answer:

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Step-by-step explanation:

You can add them all up. This is the total of the number in each can and the extras:

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Or you can take advantage of the invention of multiplication to simplify repeated addition. Multiply the number in each can by the number of cans, then add the extras.

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3 years ago
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3 years ago
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