What is your question asking???
Answer:
No, it's actually 100
Step-by-step explanation:
If you put brackets in the right places you'll see (3*20)+(4*10)=60+40=100
There are 7 dimes out of 24 total coins in the collection put 7/24 in a calculator and you should get .2916 repeating
Answer:
For the expression 
k = 9 is the required solution.
Step-by-step explanation:
Here, the given expression is 
Solving the above expression for k, we get:

or, 
or, 
or, k = 9
Hence for the expression 
k = 9 is the required solution.