Question
A is cycling at an average speed of 10 km/hr such that
he can reach a certain point at 12 noon. If he cycles at 15 km/hr, then he will reach the destination at 10 a.m. At what speed he should cycle to reach the destination at 11 a.m.Solution
Let the distance to be travelled be ‘x’ km Time taken when speed is 10 km/hr = (x/10) hours Time taken when speed is 15 km/hr = (x/15) hours According to the question, (x/10) – (x/15) = 2 Or, 3x – 2x = 2 × 30 Or, x = 60 km Time taken to travel 60 km with speed of 10 km/hr = 60/10 = 6 hours Therefore, he started at 12 – 6 = 6 a.m. Therefore, required speed to reach the destination at 11 a.m. or 5 hours = 60/5 = 12 km/hr
India highlighted at UNFCCC CoP30 that developed nations must fulfil climate-finance commitments made how many years ago?
Which term was selected as the Collins Dictionary’s “Word of the Year 2025”?
Who won the Grammy Award 2025 for Best Song of the Year?
Which group is a primary target of the BMW-UNICEF partnership to promote STEM education in rural India?
Which of the following bills passed in 2025 aligns Indian law with International Maritime Organization (IMO) conventions and enhances sea safety?
When will India launch the National Household Income Survey (NHIS), as announced by the NSO?
Which organization signed a ₹2,000 crore contract with the Ministry of Defence for Air Defence Fire Control Radars?
Which state recently joined the Ayushman Bharat PM-JAY scheme?
What is the primary focus of the Yuga Yugeen Bharat National Museum collaboration with France Museums Développement?
Who will inaugurate the 99th annual Music Academy festival in Chennai?
Relevant for Exams:
