Benches

The park has 64 benches. Occupied is 18 more than empty. How many benches are occupied and empty?

Correct answer:

o =  41
p =  23

Step-by-step explanation:

o+p=64 o=18+p  o+p=64 op=18  2o=64+18  2 o=64+18  2o=82  o=282=41  o=41
o+p=64 41+p=64  p=23  p=123=23  p=23



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Showing 1 comment:
Mathematican
Write two equations, where o means occupied, and p means empty benches. Then solve this equation; first, make an equivalent change - add up this equation to eliminate unknown p. Then find unknown o. Then, substitute the variable o to the first equation to solve unknown p.





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