Answer:
5% increase
Step-by-step explanation:
-8% + 13% = 5%
If you write that out in equation format, you get:
-7n/8 = 0.25
Just solve for n:
-7n/8=0.25
-7n=2
n=-2/7
3. We want to solve using properties;
It simply involve trying to reduce numbers to their simpliest form to make multiplication and addition easy without using calculator.
like; 21=20+1, 39=40-1 etc.
4. Given;
Answer:
Jack is 88, Priscilla is 75.
Step-by-step explanation:
Let J represent Jack's age and let P represent Priscilla's age.
Their age totaled 163, so:
And we know that Jack was 13 years older than Priscilla. In other words:
Solve for J and P. To do so, substitute the second equation into the first:
Combine like terms:
Subtract 13 from both sides:
Divide 2 from both sides:
So, Priscilla is 75 years old right now.
Jack is 13 years older meaning that Jack is 88 years right now.
And we're done!
Try D), Correct me if I'm wrong