Arianna invests money in an account paying a simple interest of 2% per year. If she invests 20 and no money will be added or removed from the investment, how much will she have in one year, in dollars and cents?

Soluzione

A r ianna in v es t s m o n ey in an a cco u n t p a y in g a s im pl e in t eres t o f 2% p er ye a r . I f s h e in v es t s 20 an d n o m o n ey w i ll b e a dd e d or re m o v e d f ro m t h e in v es t m e n t, h o w m u c h w i ll s h e ha v e in o n e ye a r, in d o ll a rs an d ce n t s ?

Amount : 20.4

Fasi della soluzione

Translate the problem into an equation:

A = 20 (1 + 0.02 \cdot 1)

20 (1 + 0.02 \cdot 1) = 20.4

Amount : 20.4