3(9) = 27
3(7) = 21
3(9+7) = 48
27+21 = 48
48=48
Okay.
40/100 students are girls.
20% of those 40 girls wear glasses.
So that's 20/40.
20/100
Solve for x by cross multiplying then isolating the variable:

cross multiply
15x=90 Isolate the variable
x=6
Solve for y by cross multiplying then isolating the variable:

cross multiply
9y=90 Isolate the variable
y=10
I believe the correct answer is true. <span>When solving a system of linear equations, try to algebraically form one equation that has only one variable. In this way, you can solve the value of that variable and eventually solve the other variables. Hope this answers the question. Have a nice day.</span>
New Delhi
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Is the anser