Asked to find 15% of a number a person finds 50% of it. If the answer obtained is larger by 105. What was the number?
Answers
Answered by
0
Answer:
We know that,
(a+b)³ = a³ + b³ + 3ab (a+b)
(a+b) = 8
ab = 15
a² + b² = 34
(a+b)³ = a³ + b³ + 3ab (a+b)
➡ (8)³ = a³ + b³ + 3*15 (8)
➡ 512 = a³ + b³ + 360
➡ 512-360 = a³ + b³
➡ 152 = a³ + b³
= ³ + ³
Similar questions