Answer:
12 boys
Explanation:
The fraction of boys in the class are :
⇒ Ratio part of boys / Sum of ratio parts
⇒ 2 / 2 + 3
⇒ 2/5
Finding the number of boys :
⇒ Number of students × fraction of boys
⇒ 30 × 2/5
⇒ 6 × 2
⇒ 12 boys
Boys are 2 parts to girls 3 parts
2 out of (2+3) are boys ====> 2/5 ths are boys
2/5 * 30 = 12 boys
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