Question

7.За 8 часов бегун 24,8 . За сколько часов бегун пробежит 18,6 км? 8.За 2.2 часа самолёт пролетел 231 км. За сколько часов самолёт пролетит 315 км?​

Answer 1

7.

S - 24,8 км

t - 8 ч

S2 - 18,6 км

t2 - ?

__________

24,8:8=3.1 км/ч - скорость бегуна

18,6:3,1=6 ч - время за которое бегун пробежит 18.6 км

ответ за 6 ч бегун пробежит

t - 2.2 ч

S - 231 км

S2 - 315 км

t2 - ?

231:2.2=105 км/ч - скорость самолета

315:105=3 ч - время за которое самолет пролетит

ответ за 3 часа самолет пролетит 315 км

Answer 2

7. За 8 часов бегун пробежит 24,8 км. За сколько часов бегун пробежит 18,6 км?

To find out how long it will take for the runner to run 18.6 km, we can set up a proportion using the given information.

Let's assume that the time it takes for the runner to run 18.6 km is x hours.

The proportion can be set up as follows:

8 hours / 24.8 km = x hours / 18.6 km

To solve for x, we can cross-multiply and then divide:

8 hours * 18.6 km = 24.8 km * x hours

148.8 km = 24.8 km * x hours

Dividing both sides of the equation by 24.8 km, we get:

148.8 km / 24.8 km = x hours

Simplifying the equation, we find:

x = 6 hours

Therefore, it will take the runner approximately 6 hours to run 18.6 km.

8. За 2.2 часа самолёт пролетел 231 км. За сколько часов самолёт пролетит 315 км?

To find out how long it will take for the plane to fly 315 km, we can set up a proportion using the given information.

Let's assume that the time it takes for the plane to fly 315 km is x hours.

The proportion can be set up as follows:

2.2 hours / 231 km = x hours / 315 km

To solve for x, we can cross-multiply and then divide:

2.2 hours * 315 km = 231 km * x hours

693 km = 231 km * x hours

Dividing both sides of the equation by 231 km, we get:

693 km / 231 km = x hours

Simplifying the equation, we find:

x = 3 hours

Therefore, it will take the plane approximately 3 hours to fly 315 km.