Last summer, Betty earned $4200 by painting houses. She invested
2 answers:
Answer: She invest $1500 in saving account and $2700 in government bond.
Step-by-step explanation:
Since we have given that
Total amount she wants to invest = $4200
Rate of interest she get in a saving account = 3.5%
Rate of interest she get in a government bond = 4.5%
Let the amount he invested in saving account be 'x'.
Let the amount he invested in government bond be 'y'
Total interest she earned = $174
According to question, it becomes,
Using Elimination method, we get that
Hence, She invest $1500 in saving account and $2700 in government bond.
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system of equations can be used to find the price in dollars of each large candle, x, and each small candle, y is and
.
<u>Step-by-step explanation:</u>
Here we have , A customer at a store paid $64 for 3 large candles and 4 small candles. At the same store, a second customer paid $4 more than the first customer for 1 large candle and 8 small candles. The price of each large candle is the same, and the price of each small candle is the same. We need to find Which system of equations can be used to find the price in dollars of each large candle, x, and each small candle, y . Let's find out:
Let the price in dollars of each large candle, x, and each small candle, y .So
A customer at a store paid $64 for 3 large candles and 4 small candles
Equation is :
⇒ .....(1)
At the same store, a second customer paid $4 more than the first customer for 1 large candle and 8 small candles.
Equation is :
⇒ .......(2)
3(2)-(1) i.e.
⇒
⇒
⇒
So ,
⇒
⇒
Therefore , system of equations can be used to find the price in dollars of each large candle, x, and each small candle, y is and
.