Mathematics

Rony and Jony are working on an assignment, Rony takes 6 hours to type 32 pages on a computer, while Jony takes 5 hours to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages?

solve the mathematical problems:

একটি নির্দিষ্ট স্থান থেকে দুইটি রাস্তা ৬০° কোণে চলে। দুইজন লোক ঐ নির্দিষ্ট স্থান থেকে যথাক্রমে ঘণ্টায় ৭ কিলোমিটার বেগে রওনা হলো। ৪ ঘণ্টা পরে তাদের মধ্যে সরাসরি দূরত্ব নির্ণয় করুন।

Section-E: Mathematics (Qs. 22-26)

A man divided his share between his sons A and B in such a way that the interest received by A at 15% p.a. for 3 years is double the interest received by B at 12% p.a. for 5 years. In what ratio was his share divided?

Section-E: Mathematics (Qs. 22-26)

In the figure, ABCD is a parallelogram. What is the value of bº?

Section-E: Mathematics (Qs. 22-26)

Two trains 100 meters and 120 meters long are running in the same direction with spoeds of 72 km/hr and 54 km/hr. In how much time will the first train cross the second?

Section-E: Mathematics (Qs. 22-26)

The ages of Rima and Bina are in the ratio of 9:8. After 5 years, the ratio of their ages will be 10:9. What is the difference in their ages?