The speed of the bus increases by 2 kmph after every one hour . If the distance travelled in the first one hour was 20 km , what was the total distance travelled in 12 hours ?400 km372 km350 km200 kmNone
Question
The speed of the bus increases by 2 kmph after every one hour . If the distance travelled in the first one hour was 20 km , what was the total distance travelled in 12 hours ?400 km372 km350 km200 kmNone
Solution 1
The speed of the bus increases by 2 kmph every hour. So, the speed for each hour will be:
1st hour: 20 kmph 2nd hour: 22 kmph 3rd hour: 24 kmph 4th hour: 26 kmph 5th hour: 28 kmph 6th hour: 30 kmph 7th hour: 32 kmph 8th hour: 34 kmph 9th hour: 36 kmph 10th hour: 38 kmph 11th hour: 40 kmph 12th hour: 42 kmph
To find the total distance travelled, we add up all these distances:
20 + 22 + 24 + 26 + 28 + 30 + 32 + 34 + 36 + 38 + 40 + 42 = 372 km
So, the total distance travelled in 12 hours is 372 km.
Solution 2
The speed of the bus increases by 2 kmph every hour. So, the speed for each hour will be:
1st hour: 20 kmph 2nd hour: 20 + 2 = 22 kmph 3rd hour: 22 + 2 = 24 kmph 4th hour: 24 + 2 = 26 kmph 5th hour: 26 + 2 = 28 kmph 6th hour: 28 + 2 = 30 kmph 7th hour: 30 + 2 = 32 kmph 8th hour: 32 + 2 = 34 kmph 9th hour: 34 + 2 = 36 kmph 10th hour: 36 + 2 = 38 kmph 11th hour: 38 + 2 = 40 kmph 12th hour: 40 + 2 = 42 kmph
Now, add all these speeds together to get the total distance travelled in 12 hours:
20 + 22 + 24 + 26 + 28 + 30 + 32 + 34 + 36 + 38 + 40 + 42 = 372 km
So, the total distance travelled in 12 hours is 372 km.
Solution 3
The speed of the bus increases by 2 kmph every hour. So, the speed for each hour will be:
1st hour: 20 kmph 2nd hour: 22 kmph 3rd hour: 24 kmph 4th hour: 26 kmph 5th hour: 28 kmph 6th hour: 30 kmph 7th hour: 32 kmph 8th hour: 34 kmph 9th hour: 36 kmph 10th hour: 38 kmph 11th hour: 40 kmph 12th hour: 42 kmph
To find the total distance travelled, we add up all these distances:
20 + 22 + 24 + 26 + 28 + 30 + 32 + 34 + 36 + 38 + 40 + 42 = 372 km
So, the total distance travelled in 12 hours is 372 km.
Solution 4
The speed of the bus increases by 2 kmph every hour. So, the speed for each hour will be:
1st hour: 20 kmph 2nd hour: 22 kmph 3rd hour: 24 kmph 4th hour: 26 kmph 5th hour: 28 kmph 6th hour: 30 kmph 7th hour: 32 kmph 8th hour: 34 kmph 9th hour: 36 kmph 10th hour: 38 kmph 11th hour: 40 kmph 12th hour: 42 kmph
To find the total distance travelled, we add up all these distances:
20 + 22 + 24 + 26 + 28 + 30 + 32 + 34 + 36 + 38 + 40 + 42 = 372 km
So, the total distance travelled in 12 hours is 372 km.
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