Question
A sum of ₹ 2,400 compounded annually at a certain rate
of compound interest in 2 years amounts to ₹ 2,904. What will be the simple interest (in ₹) on the amount at the same time and at the same interest rate?Solution
Solution- A=2904, P=2400. n=2 years. A=P(1+r/100) ² (2904/2400) =(1+r/100) ² 121/100=(1+r/100) ² r/100= (11/10)-1 r/100=1/10 r=10%. SI = (2400×10×2)/100 =480 Rs.
?% of 1499.89 + 54.14 × 8 = 25.05% of 5568.08
? = 41.92% of (34.92 x 40.42) + 29.78% of 399.84
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
(15.87% of 79.98 + 19.69% of 64.22) × 4.83 = ?
? + 163.99 – 108.01 = 25.01 × 6.98
80.09 * √144.05+ ? * √224.87 = (2109.09 ÷ √1368.79) * 19.89
(15.15 × 31.98) + 30.15% of 719.99 = ? + 124.34
(124.99)² = ?
6.992 + (2.01 × 2.98) + ? = 175.03
(627.98 ÷ 3.98 + 11.01 X 12.98 - ?) ÷ √623 = (178.98 + 37.08) ÷ 23.98