Question
A three-digit number 4c7 is added
to the number 538 to give a three-digit number 9d5 which is divisible by 9. Find the value of (d - c).Solution
ATQ,
Given: 4c7 + 538 = 9d5 9d5 is divisible by 9 Find = d−c Try c 407+538=945=9d5⇒d=4 Check divisibility by 9: 9+4+5=18 ⇒ ✅divisibleby9 Result = c=0, d=4 ⇒ d−c=4−0= 4
If a person walks 25% more than of his usual speed, reaches his distance 90 minutes before. If the destination is 217.5 km away, then the usual speed of...
Arjun left a bus stop at 14 m/s. Mohan started chasing him 7 seconds later and overtook him in 28 seconds. What speed was Mohan running at?
Gagan traveled a certain distance at his regular speed. If he had increased his speed by 20 km/h, he would have taken 2 hours less to complete the journ...
A and B are travelling towards each other with a speed of 15 km/hr and 25 km/hr. They started at same time and A covered 30 km less distance than B befo...
Excluding the Stoppages i.e. Non-stop, the speed of a Bullet train is 540 kmph and including the stoppages, it is 450 kmph. Calculate for how many minut...
A wheel has a diameter of 28 meters and rotates at a speed of 25 revolutions per minute. How much distance will the wheel travel in 32 minutes?
If the speed ratio of A, B and C while covering the same distance is 7 : 3 : 1 then find the ratio of time taken by them.
Sheila walks at the speed of her usual speed (20/21) and determines a clear distance in eight minutes more than the time it takes in normal speed. Calcu...
The speed of ‘A’ and ‘B’ is 30 km/hr and 12 km/hr, respectively. If the distance covered by ‘A’ in ‘x’ hours is 360 km more than that by...
Due to fog, the speed of a train was reduced to (2/3)rd of its original speed, resulting in a delay of 45 minutes. Find the usual time taken ...
Relevant for Exams:
