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The number of boys using Whatsapp in March is what per cent of the number of boys using Facebook in February?

a

126.47

b

136

c

128

d

131.3

Answer : Option B
Explanation :

Required per cent =680500×100=6805=136%=\frac{680}{500} \times 100=\frac{680}{5}=136 \%

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