There are 180 multiple choice questions in a test. If a candidate gets 4 marks for every correct answer and for every unattempted or wrongly answered question one mark is deducted from the total score of correct answers. If a candidate scored 450 marks in the test, how many questions did he answer correctly?

I have Rs 1000 in ten and five rupee notes. If the number of ten rupee notes that I have is ten more than the number of five rupee notes, how many notes do I have in each denomination?

At a party, colas, squash and frut juice were offered to guests. A fourth of the guests drank colas, a thirk squash, two fifths drank fruit juice and just three did not drink any thing. How many guests were in all?

A labourer is engaged for 20 days on the condition that he will receive Rs 60 for each day, he works and he will be fined Rs 5 for each day, he is absent. If he receives Rs 745 in all for how many days he remained absent?

Ravish has three boxes whose total weight isKg. Box B weighs kg more than box A and box C weighs kg more than box B. Find the weight of box A.