In a triangle ABC, the three angles are x, y and y + 10°. Also, 2x - 4y = 20°. Which type of triangle is ABC?

X , Y and Z can complete a work in 5 days, 15 days and 30 days, respectively. In how days can the work be completed if X is assisted by Y and Z together, on every second day?

Sita sold a whiteboard marker set at 10% profit. On selling it for Rs. 20 more, she would have earned a profit of 15%. What is the cost price of the whiteboard marker set?

Abraham can complete a work in 9 days, while Andrew can complete the same work in 6 days. In how many days can they complete the work if they work together?