A motor starts with the speed of 70 km/h with its speed
increasing every two hours by 10 km/h. In how many hrs
will it cover 450 km/s?
Answers
Answered by
1
Answer:
Distance covered in first 2 hours = (70 × 2) km = 140 km
Distance covered in the next 2 hours = (80 × 2) = 160 km
Remaining Distance = 345 - (140 + 160) → 45 km
Now, speed in the fifth hour = 90 km/h
Therefore, time taken to cover 45 km = 45/90 hr → 1/2 hr
Therefore, total time taken = (2 + 2 + 1/2 ) hr → 4 1/2 hrs
__________________________________
Please
• Thank the Answer
• Rate the Answer
• Mark as Brainliest
Answered by
0
INITIAL SPEED = 70 km/hr
IT IS GIVEN THAT THE SPEED IS INCREASING BY 10KM IN EVERY TWO HOURS .
SO, HERE BY WE CAN CONCLUDE THAT THE SPEED IS INCREASING BY 5KM IN EVERY HOUR. (10/2=5)
Now, 70 km/hr is the initial speed
therefore, 450 - 70 = 380
Now , we will divide 380 by 5 OR 10 AS YOUR WISH
380/10 = 38 HOURS
Similar questions
English,
1 month ago
English,
1 month ago
Math,
1 month ago
Physics,
2 months ago
World Languages,
2 months ago
Biology,
10 months ago
Political Science,
10 months ago
Hindi,
10 months ago