28 men can complete a piece of work in 15 days and 15 women can complete the same piece of work in 24 days. What is the respective ratio between the amount of work done done by 30 men in 1 day and the amount of work done by 18 women in 1 day

A person has to travel from point A to point B in certain time. Travelling at a speed of 5 km/h he reaches 48 min late 

A started a business. After 4 months from the start of the business, B and C joined. The respective ratio between the investments of A, B and C was 4:6 :5. If A's share in annual profit was INR 250/- more than C's share, what was the total annual profit earned

I. x² = 16

II. 2y²-17y+36=0

I. 3x²-13x+12 =0

II. 2y²-15y+28=0

I. 2x²+19x+45 = 0

II. 2y²+11y+12 = 0