1. A wristwatch was sold at 10% profit. If the cost was 15% less and the selling price was Tk. 20 less, then the trader would have made a profit of 20%. What was the cost of the wristwatch?
3. Babul attended five tests during the semester and the average of his test scores was 87. If has average score after first three tests were 85, what was the average of his 4th and 5th test?
4. Tk. 9,000 is divided among Abu, Rabu, Babu and Habu by 1 : 2 : 3 : 4 ratio. How much money do Rabu and Habu have together?
5. Select the word that best matches the definition provided. A mournful poem written on the death of someone loved and lost-