Question
A motor car travels a distance of 100 km at the speed of
20 kmph. If it covers the next 140 km of its journey at the speed of 70 kmph and last 60 km of its journey at the speed of 20 kmph. What is the average speed of the car?Solution
D1= 100 Km, S1= 20 Km/hr, D2= 140 Km, S2 = 70 Km/hr, D3 = 60 Km, S3= 20 km/hr. T1= (Distance )/Speed = (100 )/20 = 5 hr. T2 = (Distance )/Speed = (140 )/70 = 2 hr. T3= (Distance )/Speed = (60 )/20 = 3 hr. Average Speed= (Total Distance )/(Total Time) = (300 )/10 = 30 km/hr.
Which of the following plants has seeds lacking endosperm as a result of double fertilization?
The dominant mineral in sandstone is :
Fair and remunerative price (FRP) is the minimum price at which rate sugarcane is to be purchased by sugar mills from farmers. The current FRP for the s...
Which of the following is an atmospheric condition characterized by descending air, clear skies, and dry weather, commonly associated with anticyclones?
A typical mineral soil, on volume basis, contains:
1st commercial hybrid of sorghum released in India was
KIsan kredit card (KCC) were launched in india in
Glycolysis occurs in the __________, where one 6-carbon molecule of glucose is oxidised to generate two 3-carbon molecules of pyruvate.Â
The ability of soil to undergo deformation without cracking is called as ___
Pendimethalin is a:
