Question
The interest received by investing Rs. 2500 for 2 years
at compound interest of 20% p.a., compounded annually, was re-invested for 3 years at simple interest of 25% p.a. Find the simple interest received.Solution
Compound Interest received = 2500 Γ {1 + (20/100)}2 β 2500 = 2500 Γ (12/10)2 β 2500 = 3600 β 2500 = Rs. 1100 Simple interest received = 1100 Γ 3 Γ 25 Γ· 100 = Rs. 825
25% of 1000 + 10% of 150 β 22 Γ ? = 45
5760 ÷ 45 × 15 = ?
((0.1)3+ (1.8)3+ (1.1)3 - 0.3 ×1.8 ×1.1)/((0.1)2+ (1.8)2+ (1.1)2- (0.18)- ...
β 729 Γ 5 β 220 % of 15 + ? = 120% of 160
1111.25 × 9.05 + 2323.23 × 9.05 – 2121.37 ×9.05 =?
β529 + β64 + 92 = ?
Ravi is 12 years younger than Surya. Ravi's age is 40% of the sum of his and Surya's age. What will be Surya's age 9 years hence?Β
