In a class of 50 students, three-fifth are girls. Each girl brings a ribbon of length 2.75m and each boy brings 3.25m.What is the total length of ribbon collected by 50 students
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total student =50
total girls=3/5 ×50
=3×10
=30 girls
total boys =50-30=20 boys
length of ribbon brought by girls=2.75×30=82.5
length of ribbon brought by boys=3.25×20=65
total length of ribbon collected by 50 students=82.5+65=147.5m Ans-
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