The sum of the ages of the son and father is 120 years, the father's age is 3 times that of the son. What is the age of the father?
If a person deposit money into two banks at 6 Tk interest respectively, the difference in profit after three and half years and five years 144. How much money did the person deposit?
A border of uniform width is placed around a rectangular photograph that measures 8 inches by 10 inches. If the area of the border is 144 square inches, what is the width of the border, in inches?
How much interest will Tk 10,000 earn in 9 month at an annual rate of 6%?
a-53-3a+5=0 হলে a এর মান কত?
i-j+k এবং -i+j+2k ভেক্টরদ্বয়ের মধ্যে কোনের পরিমান কত?