Jambmaths question: At what rate will the interest on N400 increase to N24 in 3 years reckoning in simple interest Jamb Maths Solution: $R=\frac{100\times I}{P\times T}=\frac{100\times 24}{400\times 3}=2percent$ Jamb Maths Topic: Simple and compound interestYear of Exam: Jamb Maths 2010