Zhang has $ 8961576 in his bank account. He purchases a Flat for $ 3161076 and a Skoda for $ 10840. His brother gifts him $ one lakh two thousand three hundred fifty-one each month. What amount will he have at the end of 3 months?

Yan, Yuan and Liu are practicing for the school races. Yan is the youngest, and can run a lap in 196 seconds. Yuan can run a lap in 140 seconds. The oldest student Liu can run a lap in 56 seconds. They start running at the same time from the starting line. After how many seconds will they all be at the starting line at the same time?

The table below shows the number of chocolates needed for different number of students. If each student should get same number of chocolates, how many chocolates are needed for 19 students?

In an exam of English and Computers, 37% and 35% students failed in English and Computers respectively. If 11% students failed both in English and Computers, find the percentage of students who failed in the exam.

In an examination which has questions worth 100 marks, Yan scores 54 marks while Chana loses 31 marks in his paper. What is the ratio of the marks of Yan to that of Chana?