Question

SOLVE THE FOLLOWINGS NUMBERDATE
1 - CAR IS ABLE TO TRAVEL 250 KM IN 3 HOURS
HOW FAR CAN TRAVEL INC HOURS?
2. THE RATIO OF MALE PUPILS TO FEMALE PUPILS
IN COVERED COURT IS 5:9. IF THERE ARE
140 PUPILS, HOW MANY PUPILS MALE/FEMALE​

Answer 1

Answer:

01

The formula which relates distance, speed, and time is:

d = rt, where d is the distance traveled, r is the rate of travel or speed, and t is the time traveled.

Since we're given that the car travels d = 210 km. in t = 3 hours; therefore, we can use the distance-speed-time formula to first find the speed r of the car as follows:

d = rt

210 km. = r(3 hr.)

210 km./3 hr. = [r(3 hr.)]/3 hr.

210 km./3 hr. = r(3 hr./3 hr.)

70 km./hr. = r(1)

r = 70 km. is the speed of the car; therefore, to find how far the car travels in 5 hours, we utilize the distance-speed-time formula again as follows:

d = rt

= (70 km./hr.)(5 hr.)

= 350 km. is the distance a car traveling at 70 km./hr. can travel in 5 hours.

Answer:02

sorry