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12345 [234]
3 years ago
5

Bob can type 2 letters in 4 hours while bill can do it in six. How many hours will it take them, working together, to type six l

etters
Mathematics
2 answers:
Mnenie [13.5K]3 years ago
8 0

Answer:

7hr 12 min

Step-by-step explanation:

Given that

Bob  can type 2 letters in 4 hours

while on the other hand bill can do it in six hours

We need to find out the no of hours in which they type 6 hours

So,

Bob's rate is

= 2 ÷ 4

= 1 ÷ 2 letter per hour

And,  

Bill's rate is

= 2 ÷ 6

= 1 ÷ 3 letter per hour

Now

Together rate is

= 1 ÷ 2 + 1 ÷ 3 = 5 ÷ 6 letter per hour

We know that

rate × hours = production

Let us assume the hours be x

So,  

(5 ÷ 6)x = 6

x = (6 ÷ 5) × 6

x = 36 ÷ 5

= 7 1 ÷ 5

= 7hr 12 min

Maurinko [17]3 years ago
6 0

Answer:

7 hours 12 mins

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given that the point ( 8,-7) and  m = \frac{-3}{4}

Equation of the straight line passing through the point (x₁, y₁) and having slope 'm'

          y - y₁ = m (x-x₁)

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Write a cosine function that has a midline of 3, an amplitude of 4 and a period<br> of pi.
sergejj [24]

Answer:

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Step-by-step explanation:

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