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Using the formula: a³ - b³ = (a - b)(a² + ab + b²) Substituting values: a - b = 10 - 4 = 6 a² + ab + b² = 10² + 10 * 4 + 4² = 100 + 40 + 16 = 156 a³ - b³ = 6 * 156 = 936 Correct Answer: d)
5 years ago ratio of the ages of the two persons A and B was 3:1. 3 years hence the ratio of their ages will be 7:3. Find the present age of B.
The sum of three numbers is 202. If the ratio of the first to the second is 3:5 and that of second to the third is 7:9 then the second number is?
The ratio of P :Q is 3 : 5 and that of Q : R is 4 : 7. If P equals 2400, then what is the value of R?
6 years ago ratio of the ages of the two persons A and B was 5:3. 3 years hence the ratio of their ages will be 4:3. Find the present age of B.
6 years ago ratio of the ages of the two persons A and B was 5:2. 4 years hence the ratio of their ages will be 7:4. Find the present age of B.