If 903929 passengers travel everyday through Kingston airport, 43840 passengers travel through Montego Bay airport, 456529 passengers travel through airport and 245961 passengers travel through airport, how many passengers in total travel through these four cities everyday?

In a competitive exam, there are 70 questions. Students can score 4 marks for each correct answer while 1 mark is deducted for each incorrect answer. If Bob answered 21 questions correctly, how many marks did he get?

Rajae gets a salary of J$ 15600 every month and he sends J$ 1800 out of that to his parents. The ratio of the money he sends to his parents to the amount he has left over is:

An article with price tag of J$1200 is sold at 5% discount. Due to off-season shopkeeper provides additional discount of 10% on the discounted price. Find the selling price of the article.

Ronai transfers mangoes from one larger box to smaller boxes. When the larger box is emptied, mangoes fill 2 smaller boxes and still 6 mangoes remained outside. If the number of mangoes in each smaller box is a, what was the number of mangoes in the larger box?

Michelle's ranks 30^{th} in the class. Alex is 8 ranks ahead of Michelle in the class. Alex's rank from the last is 48^{th}. How many students are there in the class?