There are 70 questions in a competitive exam. 4 marks are awarded for each correct answer, while 4 marks are deducted for each incorrect answer. Banan answered 55 questions correctly. If she attempts all the questions, how many marks did she get?

Teacher asks students to fix flags around the periphery of a circular ground of radius 56 meters. If each flag is fixed 2 meters apart, find the number of flags required to cover the periphery of the ground. (assume π =

In an exam of Mathematics and Computers, 22% and 36% students failed in Mathematics and Computers respectively. If 13% students failed both in Mathematics and Computers, find the percentage of students who passed in both the exams.

A shopkeeper mixes two variants of wheat in the ratio 3:1. The first variant costs 28 per kg, while the other costs 24 per kg. If the mixed wheat is sold at the price of 20.25 per kg then find the profit/loss percent incurred by shopkeeper.

The juice cart sells 142.87 liters of grape juice on Wednesday and 17.66 liters more than this quantity on Thursday. The following day, 13.9 liters less grape juice was sold than the quantity sold on Thursday. How many liters of grape juice was sold on Friday?