Answer:
5/12
Step-by-step explanation:
You have 2/5 + 1/60. Find the common denominator which is 60.
24/60 + 1/60 = 25/60. Reduces to 5/12
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boys:girls:teachers
5 : 4 :1
75 boys, 60 girls and 15 teachers
75 : 60 :15
Divide each term by 15
75 /15 : 60/15 :15/15
3(4+5)= 3(4)+3(5)
