The speed of a bike increases by 5 km/hr after every 1 hour. If the distance travelled by the bike in 1st hour is 10 km, the find the total distance travelled by the bike in 14 hours.

Since, the speed of the bike increases by 5 km/hr after every 1 hour, therefore the bike will travel 5 km extra after every 1 hour. Therefore, distance travelled by the bike in 1st hour = 10 km Distance travelled by the bike in 2nd hour = 10 + 5 = 15 km Distance travelled by the bike in 3rd hour = 15 + 5 = 20 km This form an AP i.e. 10, 15, 20………distance travelled in 14th hour Therefore, total distance travelled by the bike in 14 hours = sum of the AP Distance travelled in 14 hours = (n/2){2a + (n – 1)d} Where n = number of terms = 14, a = 1st term = 10 and d = common difference = 5 Therefore, distance travelled in 14 hours = (14/2){2 × 10 + (14 – 1) × 5} = (14/2)(20 + 65) = 595 km

Anil and Ashish receive Rs.1200 for work of 8 days. If Anil is 5 times efficient than Ashish, then find the daily wage received by Ashish.

18 women can do piece of work in 12 days. 12 men can do the same piece of work in 9 days. Find in how many days will 8 men and 8 women complete that work?

Anil and Ashish receive Rs.1600 for work of 8 days. If Anil is 3 times efficient than Ashish, then find the daily wage received by Ashish.

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