Answer:
20 students are absent
Step-by-step explanation:
75/100 × 80 = 60
If 60 were present out of the 80
80 - 60 = 20
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Let the original electricity units used without energy savings be 100 units.
After the first energy saving improvement, the energy used
is 100 U - 25% of 100 U = 75U
After the second energy saving improvement, the energy used is
75U - 55% of 75 U = 33.75 U
After the third energy saving improvement, the energy used is
33.75 U - 20% of 33.75 U = 27U
Therefore, the overall percentage saving is 100U - 27U = 73U or 73%
Answer:
the last one
Step-by-step explanation:
there is a total of 80 items
34+24+10+11=80
= approx. 12.5% so a is wrong
= approx. 13.75% so b is wrong
there were 24 brownies sold and so c is incorrect
there were 10 cookies sold which does equal so the last one is right
Answer: Calculation of the dividends:- Year 1 = 2 * (1.04) = $ 2.08 Year 2 = 2.08 * (1.05) = $ 2.184 Year 3 = $ 2.184 * (1.06) = $ 2.31504 Year 4 = $ 2.31
Given that Jack biked for
hours with an average speed of
miles per hour.
The distance travelled by Jack is given by
Given that Jim travelled exactly
as far as Jack did, then the distance Jim travelled is given by
Therefore, the length of Jim's journey is 80 miles.