ANSWER THE FOLLOWING WITH ENCODED SOLUTION: Mathematics as a Language 1. There are two people one is shopkeeper and one is customer, the customer buys two chocolates each costs two dollars. The customer asks the shopkeeper how much, the shopkeeper calculates it and gives him receipt . The communicate using math. So give the answer how much did the chocolates cost? Mathematics in Decision Sciences 2. Bob has 100 dollar in pocket now he has to make a decision how much cake he can buy ? One cake costs 25 dollar. Mathematics in Natural Sciences and Arts 3. The gravitational force ( weight of a man ) on a man = 500N , what is the mass of that person ? ( Gravitational acceleration = 10 m/s) Mathematics for Efficiency 4. A man works 8 hrs a day in his total 10 hrs working time , he plays video game in other remaining 2hrs . Find out how much efficient he is by calculating the percentage of hours he works in his total workable time .