Yes, you are correct. Here is why There are 28 students in the the teachers homeroom. Since 25% are boys you must move the decimal over 2 spaces to find out the number of boys. .25*8=7. So 7 boys are in her cl. A way you can check is subtract 7 from 25 (28-7). Then divide 21 by 28. 21/28 which comes out to 75% and 75% plus 25% is 100% of the cl.
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