The number of classrooms on the ground floor of a public school is 10 less than twice the number of rooms on the first floor. if the number of rooms on the first floor is y. find the number of rooms on the ground floor of the school.
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Answer:
Given
Number of rooms on the first floor =x
Twice the number of rooms on the first floor =2x
We know that the word 'less than' a number means 'subtracting' it from a number.
12 less than the number of rooms on the first floor =2x−12
∴ Number of rooms on the ground floor of a building =12 less than the number of rooms on the first floor
=2x−12
hope it helps
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