Joel took OFF 5% to get 95%, or 0.95 instead of ADDING 5% to get 105%, or 1.05. 1.05(190)(0.8) = 159.60
Hi there! So, if $36.40 in interest was in her account after 3.5 years, we can divide both numbers. 36.4/3.5 is 10.4. That's $10.40 in interest per year, with the rate of simple interest being 6.5%. But to make it easier, we can divide 10.40 by 6.5 to find the unit rate. When you divide both number, you get 1.6. 1% of the initial amount is $1.60. Percents are parts of 100. Multiply 1.6 by 100 to get 160. Now, let's divide the interest earned yearly by initial amount to see if it works. 10.4/160 is 0.065 or ^.5% when turned into decimal form. there. Safiya's initial deposit in the bank was $160.
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