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coldgirl [10]
3 years ago
13

two bicycle riders start from the same point and ride in opposite directions. one rider is moving twice as the other. in 3 hours

, they are 72 miles apart. find the rate of each rider.24​
Mathematics
1 answer:
Artist 52 [7]3 years ago
5 0

Let the speed of one rider = x

The speed of the second rider would e 2x ( twice as fast)

The total speed of the two riders would be x + 2x = 3x

Speed = Distance / time

Using the numbers:

3x = 72/3

Simplify:

3x = 24

Divide both sides by 3:

x = 8

The speed of one rider is 8 miles per hour

The speed of the second rider is 2(8) = 16 miles per hour.

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6 0
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3 years ago
The age of a father is to less than seven times the age of his son in three years the sum oftheir ages will be 52 if the sons pr
vekshin1

Answer:

The correct answer is:

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Step-by-step explanation:

Since s is the son's age, "two less than seven times" the son's age would be represented by 7s-2. To represent this in 3 years, we would add 3: (7s-2)+3. In 3 years, the son's age, s, would be represented by s+3. We are told that the sum of these ages will be 52; this gives us (7s-2)+3+(s+3) = 52.

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