Answer:
3 dimes and 10 quarters
Step-by-step explanation:
If you add 7 dimes, then the number of dimes and quarters is the same, and the total increases to $3.50. A dime and a quarter have a value together of $0.35. Since there are equal numbers, the value $3.50 must be made up of some quantity of groups with a value of $0.35. That number of groups must be ...
... $3.50/$0.35 = 10
Thus, there are 10 quarters and 10-7 = 3 dimes.
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<em>Using an equation</em>
Let q represent the number of quarters. Then the amount Bess has is ...
... 0.10(q -7) +0.25q = 2.80
... 0.35q - 0.70 = 2.80
... 0.35q = 3.50 . . . . . add 0.70 . . . . . . . this should look familiar
... q = 3.50/0.35 = 10
Answer:
the answer is 1 come on dude dats ez
Step-by-step explanation:
Paul's rate before the pay rise = 7.0
The increase = 4/100 * 7.0 = 0.28
Paul's rate after the pay rise = 7.0 + .28 = 7.28
Answer:
C
Step-by-step explanation:
The first number on the mechanic's list is the one that is most negative. The negative numbers on the list are ...
-3/16, -1/4, -1/16
These are easier to compare if they have a common denominator:
-1/4 = -4/16
So, the numbers are ...
-3/16, -4/16, -1/16
The one that is most negative is -4/16 = -1/4. Only one answer choice has this listed first. (No further work is necessary.)
