Subject

Mathematical Problems

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Quizzes in Mathematical Problems

The jogging track in a sports complex is 726 meters in circumference. Deepak and his wife start from the same point and walk in opposite directions at 4.5 km/hr and 3.75 km/hr respectively. They will meet for the first time in?

Correct answer(s):
    • 5.28 min

How long must a driver take to drive the final 70 miles of a trip if he wants to average 50 miles an hour for the entire trip and during the first part of the trip he drove 50 miles in {1 ☓ (1 ÷ 2)} hours?

Correct answer(s):
    • 54 min

An express train traveled at an average speed of 100 km/hr, stopping for 3 minutes after every 75 km. How long did it take to reach its destination 600 km from the starting point?

Correct answer(s):
    • 6 hrs 21 min

A family planning a weekend trip decides to spend not more than a total of 8 hours driving. By leaving early in the morning, they can average 40 miles per hour on the way to their destination. Due to the heavy Sunday traffic, they average only 30 miles per hour on the return trip. What is the farthest distance from home they can plan to go?

Correct answer(s):
    • Between 120 and 140 miles

A star is (8.1 ☓ 1023) km away from the earth. Suppose light travels at the speed of (3.0 ☓ 105) per second. How long will it take the light from the star to reach the earth?

Correct answer(s):
    • 7.5 ☓ 104 hours

Car A travels at the speed of 65 km÷hr and reaches its destination in 8 hours. Car B travels at the speed of 70 km÷hr and reaches its destination in 4 hours. What is the ratio of the distance covered by car A and car B respectively?

Correct answer(s):
    • 13 : 7

A is traveling at 72 km per hour on a highway while B is traveling at a speed of 25 meters per second. What is the difference in their speeds in meters per second?

Correct answer(s):
    • 5 m/sec

A car is driven at the speed of 100 km/hr and stops for 10 minutes at the end of every 150 km. To cover a distance of 1000 km, it will take?

Correct answer(s):
    • 11 hours

In track meets both 100 yards and 100 meters are used as distances. By how many meters is 100 meters longer than 100 yards?

Correct answer(s):
    • 8.56 m

The speeds of the three cars are in the ratio 2 : 3 : 4. The ratio of the times taken by these cars to travel the same distance is?

Correct answer(s):
    • 6 : 4 : 3

A train leaves Delhi at 4.10 P.M. and reaches Aligarh at 7.25 P.M. The average speed of the train is 40 km/hr. What is the distance from Delhi to Aligarh?

Correct answer(s):
    • 130 km

A monkey climbing up a pole ascends 6 meters and slips 3 meters in alternate minutes. If the pole is 60 meters high, how long will it take the monkey to reach the top?

Correct answer(s):
    • 37 min

At present, Suresh’s age is twice the age of his daughter. After 6 years from now, the ratio of the ages of Suresh and his daughter will be 23 : 13. What is the present age of Suresh?

Correct answer(s):
    • 40 years

Reenu’s father was 38 years of age when she was born while her mother was 36 years old when her brother 4 years younger to her was born. What is the difference between the ages of her parents?

Correct answer(s):
    • 6 years

18 years ago, a man was three times as old as his son. Now, the man is twice as old as his son. The sum of the present ages of the man and his son is?

Correct answer(s):
    • 108 years

Ratio between the ages of Subhash, Prasad and Amar is 3 : 6 : 7. If the difference between the ages of Prasad and Amar is 10 years, then what is the difference between the ages of Subhash and Prasad?

Correct answer(s):
    • 30 years

The present age of Mr. Sanyal is three times the age of his son. Six years hence, the ratio of their ages will be 5 : 2. What is the present age of Mr. Sanyal?

Correct answer(s):
    • 54 years

The present ages of the three persons are in the proportion 4 : 7 : 9. Eight years ago, the sum of their ages was 56 years. The present age of the eldest person is?

Correct answer(s):
    • 36 years

The age of the mother today is thrice that of her daughter. After 12 years, the age of the mother will be twice that of her daughter. The age of the daughter today is?

Correct answer(s):
    • 12 years