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3 years ago

Pamela's age is two times it's age. The sum of their ages is 69 what is jiri’s age?

Mathematics

2 answers:

Tresset [83]3 years ago

5 0

Answer:

Step-by-step explanation:

2x+x = 69

3x= 69

x= 69/3

x= 23

pamela = 2x = 46 years

jiri= 23 years

pickupchik [31]3 years ago

3 0

9514 1404 393

Answer:

Step-by-step explanation:

Let J represent Jiri's age. Then Pamela's age is 2J and the sum of their ages is ...

J + 2J = 69

3J = 69 . . . . .collect terms

J = 23 . . . . . . divide by 3

Jiri's age is 23.

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mezya [45]

Answer:

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Step-by-step explanation:

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3 years ago

train travelling at a uniform speed covers a distance of 255 km in Find the speed of the train and 3 4/5 1 1/2 the distance cove

serg [7]

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The distance covered by the train in 3 4/5 hours is 570 km.

The speed of a body is calculated using the formula, speed = distance/time.

The distance covered is calculated using the formula, distance = speed*time.

The time taken by a body is calculated using the formula, time = distance/speed.

In the question, we are asked for the speed of a train, when it covers a distance of 225 km in 1 1/2 hours.

Distance = 225 km.

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Speed = Distance/Time = 225/1.5 km/hour = 150 km/hour.

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Speed = 150 km/hour.

Time = 3 4/5 hours = 3.8 hours.

Distance = Speed*Time = 150*3.8 km = 570 km.

Thus, the speed of the train is 150 km/hour.

The distance covered by the train in 3 4/5 hours is 570 km.

The provided question is incorrect. The correct question is:

"A train at a uniform speed covers a distance of 225 km in 1 1/2 hours. Find the speed of the train and the distance covered in 3 4/5 hours.

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ki77a [65]

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3 years ago

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Strike441 [17]

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Step-by-step explanation:

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4 years ago