Given,
Nominal worth of \[1\text{ }offer\text{ }=\text{ }Rs\text{ }100\]
Furthermore, the market worth of \[=\text{ }Rs100\text{ }+\text{ }Rs\text{ }20\text{ }=\text{ }Rs120\]
(as the premium is Rs 20)
Likewise given, the benefit \[percent\] on venture of \[1\text{ }offer\text{ }=\text{ }15percent\]
Then, at that point, benefit \[=\text{ }15percent\text{ }of\text{ }Rs\text{ }120\text{ }=\text{ }Rs\text{ }18\]
Thus,
Profit \[percent\text{ }=\text{ }18/100\text{ }x\text{ }100\text{ }=\text{ }18percent\]