Jackson inherited some money from his grandfather and put it in a bank account that earns 10% interest compounded annually. After 8 years, Jackson had 1,000.00 in the bank account. How much interest did he earn?

פתרון

J a c k so n inh er i t e d so m e m o n ey f ro m hi s g r an df a t h er an d p u t i t in a bank a cco u n t t ha t e a r n s 10% in t eres t co m p o u n d e d ann u a ll y . A f t er 8 ye a rs, J a c k so n ha d 1, 000.00 in t h e bank a cco u n t . Ho w m u c h in t eres t d i d h e e a r n ?

Interest : 533.49

צעדי פתרון

Translate the problem into an equation:

1000 = 466.50738 \dots + I

1000 = 466.50738 \dots + I, I

פתור בשביל:

I = 533.49

Interest : 533.49