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פּוֹפּוּלָרִי Word Problems >

Lennie Cavan earned 576 in interest when she invested in a fund paying 9.5% simple interest for 4 years. How much did Lennie invest originally using the simple interest formula?

פתרון

L e nni e C a v an e a r n e d 576 in in t eres t w h e n s h e in v es t e d in a f u n d p a y in g 9.5% s im pl e in t eres t f or 4 ye a rs . Ho w m u c h d i d L e nni e in v es t or i g ina ll y u s in g t h e s im pl e in t eres t f or m u l a ?

פתרון

Principal : 1515.79

צעדי פתרון

Translate the problem into an equation:

576 = P \cdot 0.095 \cdot 4

576 = P \cdot 0.095 \cdot 4, P

פתור בשביל:

P = 1515.79

Principal : 1515.79

דוגמאות פופולריות

One number is two more than another. Their sum is 8.Seven more than the product of a number and 9 is 3 two consecutive numbers whose sum is 229 the scale of a rectangle is 1cm:320m. the length of the rectangle is 2.5 cm and the width is 12.5 cm. what is the real life area of the rectangle?Reggie opened a savings account and deposited 300.00 as principal. The account earns 4% interest, compounded annually. What is the balance after 5 years?