The total before shipping and handling is 51.895 .
<u>Step-by-step explanation:</u>
We have , a mail order company charges 4 1/2 % for shipping and handling for all orders if the total form order is 54.34 . We need to calculate how much is the total before shipping and handling . Total price = 54.34 , in which % are company charges for shipping and handling :
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Also, Total charges = Product cost + Company charges
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∴ The total before shipping and handling is 51.895 .
to solve this we need to translate into math terms, so
Step 1
a) let d represents the number of dimes
let n represents the number of nickles
so
re write the expressions
The number of nickels is three more than seven times the number of dimes in other words you have to add 7 to seven times the number of dimes to obtain the number of nickles
hence
therefore , the expression for the number of nickles is
I hope this helps you
Let m and j be the current ages of Matthew and Jenny, respectively.
Now, Matthew is 3 times as old as Jenny, so the variables are in the following relation:
In 7 years, both of them will be 7 years older, i.e. their ages will be m+7 and j+7, and Matthew will be twice as old:
Now, remembering that m=3j, we can rewrite the second equation as
So, Jenny is 7 and Matthew is 21 (he's 3 times older).
In fact, in 7 years, they will be 14 and 28, and Matthew will be twice as old.