1. Bethany wants to save $720 to buy a new computer. If she has 15 weeks to save the money, how much must she save each week?
1 answer:
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Mr. Jackson invested $800 at 6% per year and $ 2400 at 4 % per year
<h3><u>Solution:</u></h3>Mr. Jackson invested a sum of money at 6% per year, and 3 times as much at 4% per year.
Let the sum invested be ‘a’ and ‘3a’ at 6% per year and 4 % per year respectively
Also, his annual return totaled $144
We can form following equation on the basis of question:-
a = $800
The amount of money invested at 6% = a = 800
The amount of money invested at 4 % = 3a = 3(800) = 2400
So, the amount of money invested at 6% is $800 and the amount of money invested at 4% is $ 2400
42.8% players practised more than one time a week
Step-by-step explanation:
Total no of players practising = 7
Players who practice more than once a week= 3
(According to graph player no 1,3 and 5 played more than once in a week)
To find the percentage of the players who practised more than one time a week
The formula used is:
percentage of players practising more than one time a week= ( no of player playing more than once / total no of players ) x 100%
Putting values in the formula
percentage of players playing more than one time a week= %
= %
= 42.8%
So, 42.8% players practised more than one time a week
Keywords: Calculation of percentage
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