Entrance Exams
Govt. Exams
SI = (P × R × T)/100 = (6000 × 8 × 2.5)/100 = 1200
If CP = 5, Profit = 3. Profit% = (3/5) × 100 = 60%
Work rate A = 1/10, B = 1/15. Combined = 5/30 = 1/6. In 3 days = 3/6 = 1/2 work done. Remaining = 1/2. B's time = (1/2)/(1/15) = 7.5 days
Downstream speed = 18 km/h, Upstream speed = 12 km/h. Time downstream = 108/18 = 6 hours. Time upstream = 108/12 = 9 hours. Total = 15 hours. Wait, recalculate: Total = 6 + 8 = 14 hours
If B = 100, then A = 125. B/A = 100/125 = 80%
A = P(1 + r/100)^n = 5000(1.12)^2 = 5000 × 1.2544 = 6272
Original speed = 240/4 = 60 km/h. New speed = 60 × 1.2 = 72 km/h. Distance in 5 hours = 72 × 5 = 360 km
Rate A = 1/12, Rate B = 1/15. Combined = 9/60 per hour. In 2 hours: 18/60 filled. Remaining = 42/60. New rate = 9/60 - 1/10 = 3/60. Time = (42/60)/(3/60) = 14 hours. Total = 2 + 7.5 = 9.5 hours
Let CP = 100. MP = 140. After 15% discount, SP = 140 × 0.85 = 119. Profit = 19%
Speed = 480/8 = 60 km/h