A student was asked to multiply a number by $3/2$ but he divided that number by $3/2$. His result was 10 less than the correct answer. The number was :
Options:
A . 12
B . 10
C . 20
D . 15
Answer: Option A Answer: (a)Let the given number be x. Then, (X x $3/2$)-(X ÷ $3/2$) = 10 ⇒ $3/2$x - $2/3$ x = 10 ⇒ = ${9x – 4x}/6$ = 10 ⇒ 5x = 60 ⇒ x = 12
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