Entrance Exams
Govt. Exams
SI = (8000 × 12 × 1.5)/100 = 1440. Amount = 8000 + 1440 = Rs. 9440
Number = 180/0.45 = 400. So 80% of 400 = 320
Profit % = [(140 × 85)/100 - 100] = [119 - 100] = 19%
Boat speed = (Downstream + Upstream) / 2 = (20 + 12) / 2 = 32 / 2 = 16 km/h.
Speed = 200/5 = 40 km/h. Distance in 8 hours = 40 × 8 = 320 km.
35% of x = 105. x = 105/0.35 = 300. 65% of 300 = 0.65 × 300 = 195.
B takes 30 days, so B's rate = 1/30. A works twice as fast, so A's rate = 2/30 = 1/15. Combined rate = 1/30 + 1/15 = 1/30 + 2/30 = 3/30 = 1/10. Time taken = 10 days.
x% of 400 = 20% of 500. (x/100) × 400 = 0.2 × 500. 4x = 100. x = 25.
Let CP = 100. MP = 160. After 25% discount, SP = 160 × 0.75 = 120. Profit = 120 - 100 = 20. Profit% = 20%.
A = P(1 + R/100)^T = 12000(1.1)^2 = 12000 × 1.21 = 14,520.