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Popular Word Problems >

Five years ago Preston deposited 5000 dollars into a bank that paid him simple interest Over that time he earned 900 dollars in interest What interest rate did the bank give Preston

Solution

F i v e ye a rs a g o P res t o n d e p os i t e d 5000 d o ll a rs in t o a bank t ha t p ai d him s im pl e in t eres t O v er t ha t t im e h e e a r n e d 900 d o ll a rs in in t eres t Wha t in t eres t r a t e d i d t h e bank g i v e P res t o n

Solution

Rate : 3.6%

Solution steps

Translate the problem into an equation:

900 = 5000 r \cdot 5

Solve for

r, 900 = 5000 r \cdot 5 : r = 3.6%

Rate : 3.6%

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