Tag: general knowledge

The average age of 20 boys in a class is 14. If the teacher is included in the group and one boy is excluded from the group, the average increases by 0.5. What is the difference in the age of the teacher & the out going student

In an examination 80% students passed in Physics, 70% in Chemistry, while 15% failed in both the subjects. If 390 students passed in both the subjects, find the total number of students who appeared in the examination.

A person went with flowers for worship to four temples. He purchased enough flowers before entering the gate of each temple to make the number he had with him become double, three-fold, four-fold and five-fold respectively at the gates of the first, second, third and fourth temple. The number of flower offered at each temple was 120 and he had no flowers remaining with him after offering at the fourth temple. He started with:

Dave purchased 150 bales of cotton at Rs. 70 per bale. He spent Rs. 500 on the transportation, paid octroi at the rate of 40 paise per bale and paid Rs. 140 to the coolie. What must be the S.P. per bale to have a gain of 20%?

A boat goes 45 km. up stream in 9 hours and a distance of 49 km. downstream in 7 hours. The speed of the boat in still water is:

In what ratio should water be mixed with a liquid costing Rs. 18 per litre, so as to make a profit of 20% by selling the diluted liquid at Rs.19.2 per litre?

A, B, C, D, ……X, Y, Z are the players who participated in a tournament. Everyone played with every other player exactly once. A win scores 2 points, a draw scores 1 point and a lose scores 0 points. None of the matches ended in a draw. No two players scored the same score. At the end of the tournament, the ranking list is published which is in accordance with the alphabetical order. Then

A shopkeeper announces a discount scheme as follows: "For every purchase between Rs. 2000 to Rs.5000, get a 15% discount or a ticket that entitles him to get a 7% discount on a future purchase of more than Rs. 5000.” The customer, however, would have the option of redeeming his right to the shopkeeper at 4% of his initial purchase value. (Right refers to the 7% discount ticket). In response to the scheme, 10 people purchased goods worth Rs. 3000 each. Find the maximum possible earnings of the shopkeeper.

On account of reduction in price of Oranges by 33.33%. Atul can buy 3 kgs more apples for Rs.99. Find the reduced price of Oranges per kg.