Q. A car covers a distance of 715 km at a constant speed. If the speed of the car would have been 10 km/hr more, then it would have taken 2 hours less to cover the same distance. What is the original speed of the car?
Option
a) 45 km/hr
b) 50 km/hr
c) 55 km/hr
d) 65 km/hr
Q. Two trains running at x meters per second and y meters per second cross the same tunnel in a seconds and b seconds respectively. If the difference of lengths in the trains is m meters, then-Option
Option
A) m=xa - yb
B) 1/m=1/(xa) + 1/(yb)
C) m=xa + yb
D) m/(xa)=yb + 1Q
Q. Koel score 49 marks in english, 37 marks in science, 45 marks in maths, 53 marks in hindi and 55 marks in social. The maximum marks a student can score in each subject is 70.how much approx percentage did Koel get in this exam?
Q. The sum of the digits of two digit number is 12..if new number formed by reversing the digits is greater than the original number by 54.what will be the original number?
Q. If u,v,w,x,y and z are non negative integer ,each less than 11,then how many distinct combination(u,v,x,y,z) satisfy v(11^4)+w(11^3)+x(11^2)+y(11)+z(1)=151001
Given an unlimited supply of three weights, 3 kg, 11 kg, and 17 kg, find different ways of combining at least one of each weight to make a total of 100 kg exactly.