The perimeter of a square is 80m and the length of the rectangle is 25% more than the side of the square and the area of the rectangle is 600m². Find the sum of the perimeter of the rectangle and circumference of the circle, if the radius of the circle is 2m more than the half of the breadth of the rectangle.

A can complete a work in 32 days, which is 20% less than the time taken by B. The time taken by C to destroy the work is 8 days more than the time taken by B. Find the approximate time taken by all the three persons to complete the work.

Train A can cross a pole and a bridge of 450 metres long in 12 seconds and 30 seconds respectively. If the length of the train B is double that of train A, then find the speed of train B, if takes 30 seconds to cross a pole.

The average number of people who visited the theatre in 2021, 2022 and 2023 is 90. If the average number of people who visited the theatre in 2021 and 2022 is 45 and the ratio of the number of males to females who visited the theatre in 2023 is 3:1, then findthe number of males who visited the theatre in 2023.

The total number of students in classes P and Q is 10% less and 30% more than that of class R. If the total number of students in classes P and Q is increased by 30 and 20 respectively, then the ratio of the total number of students in class P to class Q is 4:5. Find the total number of students in class R?

What value should come in the place of (?) in the following number series?

1900, 2156, ?, 2232, 1748, 2324

What value should come in the place of (?) in the following number series?

232, 116, 348, ?, 435, 72.5

What value should come in the place of (?) in the following number series?

1280, 1240, 1160, 1040, 880, ?

What value should come in the place of (?) in the following number series?

56, ?, 90, 110, 132

What value should come in the place of (?) in the following number series?

880, 843, 802, ?, 712, 659