Out of four numbers the average of the first three is 16 and that of the last three is 15. If the last number is 20, tha…

Nine persons went to a hotel for taking their meals. Eight of them spent Rs.12 each on their meals and the ninth spent R…

The average weight of A, B and C is 40 kgs. Weight of C is 24 kgs more than A’s weight and 3 kgs less than B&rsquo…

A cricketer whose bowling average is 12.4 runs per wicket takes 5 wickets for 26 runs and thereby decreased his average …

The average of 20 students is 12 years, if the teacher's age is included, average increases by one. The age of the teach…

The average of the two-digit numbers, which remain the same when the digits interchange their positions, is-

There are five boxes in cargo hold. The weight of the first box is 200 kg and the weight of the second box is 20% higher…

30 pens and 75 pencils altogether were purchased for Rs. 510. If the average price of a pencil was Rs. 2, what was the a…