Question
One day, 'A' arrived at the bus stop 10 minutes late.
The next day, he increased the speed of his bicycle by 5 km/h, which helped him reach the bus stop on time. If the distance from his home to the bus stop is 130 km, what was the speed of 'A's cycle on the day he increased his speed?Solution
ATQ, Let 'A's normal speed be ‘s’ km/h. Time taken to reach the Bus stop at normal speed = (130/s) hour Now, after increasing the normal speed by 5 km/h. New speed will be = (s + 5) km/h Time taken to reach the Bus stop at new speed = 130/(s + 5) hour According to the given information, 130/s – 130/(s + 5) = 1/6 s2 + 5s – 3900 = 0 s2– 60s + 65s – 3900 = 0 s(s – 60) + 65(s – 60) = 0 (s –60)(s + 65) = 0 Therefore, s = 60 km/h Therefore, his increased speed on that day = 60 + 5 = 65 km/h
A rectangular piece of copper foil of length 42 cm and area 924 cm2 is folded along its width to form a cylinder such that there is only one ...
Journal lists transactions in which order?
Nursing breaks under the Maternity Benefit Act, 1961 must be provided until the child is:
A train can cross a pole in 48 seconds. While if the train increased its speed by 50% then time taken by it to cross 225 metres long platform is 42 seco...
Which of the following is not a part of the Von Neumann architecture?
The United Nations Permanent Forum on Indigenous Issues (UNPFII) is a high-level advisory body established in ________________ .
Three of the following words are alike in some manner and hence form a group. Which word does NOT belong to that group?
According to the Economic Survey 2020 - 21, which one of the following will be India's real GDP growth in the year 2021 - 22 ?
Find the median of 5, 9, 10, 10, 4, 8, 6, 5 and 12.
Consider the following statements regarding Saksham Anganwadi and the Poshan 2.0 initiative: Which of the following statements is/are not correct?
...
Relevant for Exams:
