Answer:
48
Step-by-step explanation:
Total ratio = 7 + 1 = 8
Let the total number of students be x
Number of boys.
7/8 × x = 42
7/8 x = 42
Multiply both sides by 8
8 × 7/8 x = 42× 8
7x = 336
Divide both sides by 7
7x / 7 = 336/7
x = 336/7 = 48
Therefore total number of students is 48
I hope this was helpful, please rate as brainliest
Company A: 250+10n
Company B: 90+12n
2*3n would be the equation.