SOLUTION: . There are 42 students in a class. The number of boys is 3 less than twice the number of girls. How many boys and how many girls are there.

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Question 840906: . There are 42 students in a class. The number of boys is 3 less than twice the number of girls. How many boys and how many girls are there.

Answer by hamsanash1981@gmail.com(151) About Me  (Show Source):
You can put this solution on YOUR website!
let the girls in a class be x and boys = 2 times of girls - 3
boys = 2x-3
Total students are 42
x + 2x - 3 = 42
3x =45
x = 15
Boys = 2(15)-3
=27
Therefore No of girls = 15 and boys = 27