I. x²-10x+25=0

II y²-9y+20=0

I. 2x²-9x+4=0

II y²-14y+40=0

The speed of a boat in still water is 16km/h and the speed of the current is 2 km/h. The distance travelled by the boat from point A to point B downstream is 12 km more than the distance covered by the same boat from point B to point C upstream in the same time. How much time will the boat take to travel from C to B downstream

How much money did Ms. Malini receive as retirement funds

Out of the total money received Ms. Shalini gave 25% to her husband and 10% to her daughter. Out of the remaining she invested 30% in Mutual funds, 60% in Pension fund scheme and remaining INR 2,60,000/-, she spent on miscellaneous items.

Out of the total money received Ms. Shalini invested 58.5% in various schemes, gave 35% of the total money received to her husband and daughter and remaining money she spent on miscellaneous items.

In how many days can ‘B’ alone complete the work

A,B, and C together can complete the work in 4 ³²/₃₇ days.  

A and B together can complete the work in 6 ²/₃ days, B and C together can complete the work together in 8 2/11 days and A and C together can complete the work in 7 ¹/₃ days.

What is the curved surface area of the right circular cylinder

I.Area of the base of the cylinder is 616 cm²

II.Volume of the cylinder is 9240 cm²,