Question
A person 'P' invested Rs. 800 for
2 years at an interest rate of 'a'% per annum, Rs. 450 for 4 years at an interest rate of (a - 2)% per annum, and Rs. 1200 for 5 years at an interest rate of 5% per annum. The total simple interest earned was Rs. 604. Determine the value of 'a'.Solution
ATQ, 800 × 2 × a% + 450 × 4 × (a - 2)% + 1200 × 5 × 5% = 604 16a + 18a – 36 + 300 = 604 34a + 264 = 604 34a = 340 a = 10Â
More Simple and compound interest Questions
70.14% of 799.95 - 240.12 = ? + 40.17% of 299.95
33.33% of 809.891 + 66.66% of 212.91 = ?
(?)2 = (5.99)2 + (7.88)2 + 43.99
68.98 × 41.03 – (12.33)² + 15.78% of 8398.87 = ? – 40.22
124.88% of 1199.85 + 99.99 ÷ 3.99 = ?
(519.98 + ?) ÷ 13.01 = √440 + 20.0
(439.98 ÷ 10.99) × 23.98= ? × (23.98) 2 ÷ 47.98
- 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.)
41.97 × 5.12 ÷ 2.99 + 49.89 = ?× 1.99
?² x
