Wyatt and Belle deposit 700.00 into a savings account which earns 9% interest compounded monthly. They want to use the money in the account to go on a trip in 2 years. How much will they be able to spend? Round to the nearest 10th.

해법

W y a tt an d B e ll e d e p os i t 700.00 in t o a s a v in g s a cco u n t w hi c h e a r n s 9% in t eres t co m p o u n d e d m o n t h l y . T h ey w an t t o u se t h e m o n ey in t h e a cco u n t t o g o o n a t r i p in 2 ye a rs . Ho w m u c h w i ll t h ey b e ab l e t o s p e n d ? R o u n d t o t h e n e a res t 10 t h .

Amount : 837.49

솔루션 단계

Translate the problem into an equation:

A = 700 (1 + \frac{0.09}{12})^{12 \cdot 2}

700 (1 + \frac{0.09}{12})^{12 \cdot 2} = 837.48947 \dots

가장 가까운 hundredth 으로 반올림:

837.49

Amount : 837.49