In 2 years, Vijay wants to buy a bicycle that costs 500.00. If he opens a savings account that earns 8% interest compounded monthly, how much will he have to deposit as principal to have enough money in 2 years to buy the bike?

الحلّ

I n 2 ye a rs, Vija y w an t s t o b u y a bi cyc l e t ha t cos t s 500.00. I f h e o p e n s a s a v in g s a cco u n t t ha t e a r n s 8% in t eres t co m p o u n d e d m o n t h l y, h o w m u c h w i ll h e ha v e t o d e p os i t a s p r in c i p a l t o ha v e e n o ug h m o n ey in 2 ye a rs t o b u y t h e bik e ?

Principal : 426.3

خطوات الحلّ

Translate the problem into an equation:

500 = P (1 + \frac{0.08}{12})^{12 \cdot 2}

500 = P (1 + \frac{0.08}{12})^{12 \cdot 2}, P

حلّ لـ:

P = 426.3

Principal : 426.3