Question
A train has to cover a distance of 120 km in 10 hours.
If it covers half journey in 3/5th time, then the speed of covering the remaining distance in the time left has to be:Solution
Speed = Distance/time = 120/10 = 12 km/hr According to the question, New time = 3/5 x 10 = 6 hrs New distance = 1/2 x 120 = 60 km Required speed = Distance left/Time left = 60/4 = 15 km/hr
A software company had 'p' lines of code in their codebase in 2019. It increased by 30% in 2020 and then by another 20% in 2021. In 2022, the lines of c...
P spends 27% of his salary on transportation, 30% on food, 18% on children’s education and 16% on medical. He deposits the remaining amount of Rs....
Monthly savings of βAβ is Rs. 600 more than his monthly expenditure and his total monthly income is Rs. 5000. If his monthly income is increased by ...
Simran scored 25% marks in a test and failed by 50 marks, whereas Neil scored 40% marks in the same test and failed by 20 marks. Find the passing marks ...
A man donated 10%, 16% and 28% of his income to three NGOs βAβ, βBβ and βCβ, respectively. They spent 75%, 80% and 50% of respective sums re...
In a two digit positive number, the digit in the unit’s place is equal to the square of the digit in ten’s place, and the difference between...
- The combined value of βrβ and βsβ is 750. If βrβ is decreased by 4% and βsβ is increased by 16%, they become the same. Find the value of οΏ½...
The weight of two persons Vishwas and Vivek are in the ratio 5:7. If the weights are increased in such a way that Vivek’s weight is increased by 2...
- A school purchased a total of 15000 books where 20% of the books were textbooks and the remaining were reference books. If 75% of the textbooks purchased a...
The value of Aβs car is depreciating by 44% every year whereas the value of his house is appreciating by 8% each year as compared to the previous year...
Relevant for Exams:
