Question
A cyclist has to cover 180 km. She rides the first 20%
at 25 kmph, half of the distance at 30 kmph, and the remainder at 20 kmph. What is her approximate average speed?Solution
ATQ, Time for the first segment at 25 kmph = (180 × 0.20) / 25 = 1.44 hours Time for the second segment at 30 kmph = (180 × 1/2) / 30 = 3 hours Distance for the third segment = 180 - (180 × 0.20) - (180 × 1/2) = 180 - 36 - 90 = 54 km Time for the third segment at 20 kmph = 54 / 20 = 2.7 hours Average speed = 180 / (1.44 + 3 + 2.7) ≈ 32.73 kmph
Nari Shakti Purskar Yojna guideline was revised in which year?
What type of vegetables are commonly grown hydroponically under controlled environments?
With respect to integrated pest management the threshold level means:
The word ‘market’ comes from which language?
Rainfall distribution, heavy rainfall, heat and cold wave conditions, thunder storms, Occurrence of rainfall, temperature intensity etc. are included un...
Which of the following is smallest order of class Insecta?Â
Recovery of sugar in sugarcane crop in India is:
‘Phyllody’ disease in sesamum is caused by
Reproductive phase of fruit plants is improved by the accumulation of _____:
The minimum number of satellites needed for a GPS to determine its position precisely is
