Question
The speed of the cycle changes with the change in speed
of wind. Time taken by cycle to travel 20 km., is 2 hours when wind is in the direction of the cycle moving, and time taken to travel the same distance against the wind is 3 hours. Find out the percentage increase in speed of the cycle to cover the distance in same time.Solution
Let the speed of cycle be ‘X’ km/hr. and speed of wind be ‘Y’ km/hr. As per the question, X+Y = 20/2 X+Y = 10 km/hr.-------------- (1) X-Y = 20/3 Km/hr.------------(2) Solving (1) and (2) X= 50/6 Km/hr. Y = 10/6 Km/hr. Speed is required to cover the 20 km in 2 hr. When the speed of wind is against the cycle. 10= S-(10/6) S= 10+(10/6) S= 70/6 Km/hr. Required Increased in Speed = 70/6-50/6 = 20/6 Required percentage = (20/6)/ (50/6) x 100 = 40%
Hate the seven deadly sins.
Many travellers approach Lahaul and Spiti
P- via the 3978m-high Rohtang La pass,
Q- tourism hub of Manali
R- which rises north of the
Ritesh said,” Let us play a game.”
Select the correct Passive form of the given sentence.
Did he visit a museum?
But step outside and __________ will hit you. There’s ____________ poverty. Women still ________ for miles to get water, and it’s _________ that the...
The experience has made him generally hostile _____________ people.
I was hurt, but I am glad he _________ mind.
Fill in the blanks with suitable articles like ‘a’, ‘an’and ‘the’ :
He saw ________ elephant at the Zoo.
They’re scattered
P- and are not the
Q- traditional Christmas lights
R- throughout the old town
Sheena said to her,” Who are you and where are you coming from?”
