Question
A certain sum of money becomes 8000 in 6 years and Rs.
9240 in 10 years at any certain rate of simple interest. Find the principal amount.Solution
Simple interest for 4 years = 9240 – 8000 = Rs. 1240 Simple interest for 1 year = 1240/4 = Rs. 310 Simple interest for 6 years = 310 × 6 = Rs. 1860 So, required principal amount = 8000 – 1860 = Rs. 6140
More Simple and compound interest Questions
?% of 320 - 69 = 123
24% of 15% of 500 + 122 = ?2 – (232 ÷ 2)
√ (12+√ (12+√ (12+ ⋯ ∞ ))Â
32 × 3 (54 – 15) + 186 ÷ 3 ÷ 2 – (21)² =?
- What will be come in place of (?) in the given expressions.
725 – [32 × 5 + {144 ÷ 12}] = ? [(1245 ÷ 9) ÷ 12] × 540 = ?2 – 175
641.5 + 72 × 8 = ? × 4
- What will come in the place of question mark (?) in the given expression?
135÷ 15 x 19 + 14807 = ? + √3249 - √9604
If a³ - b³ = (a - b)(a² + ab + b²), find a³ - b³ when a = 10 and b = 4.
