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ANEK [815]
3 years ago
12

The ratio of boys to girls in the classroom is 12:25 if there are 120boys how many girls are there​

Mathematics
2 answers:
Ann [662]3 years ago
8 0
Call x is the number of girls in the classroom.
12/120 = 25/x
x = 120*25/12
x=250
Answer 250 girsl
lesya [120]3 years ago
4 0
Ask yourself what do I have to multiply by 12 to get an answer of 120 ( you can just do 120/12, which is 10) then, you multiply the other side by ten as well

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Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

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