Question

Nalini has received a total of 600 WhatsApp messages from four friends Anita, Bina, Chaitra and Divya. Bina and Divya have respectively sent 30% and 20% of these messages, while Anita has sent an equal number of messages as Chaitra. Moreover, Nalini finds that of Anita’s, Bina’s, Chaitra’s and Divya’s messages, 60%, 40%, 80% and 50% respectively are jokes. What percentage of the jokes, received by Nalini, have been sent neither by Divya nor by Bina?

Accepted Answer

C. Total messages = 600. Bina (B) sent $30\% 	imes 600 = 180$. Divya (D) sent $20\% 	imes 600 = 120$. Remaining = $600 - 300 = 300$, split equally between Anita (A) and Chaitra (C): $150$ each. Jokes: A: $60\% 	ext{ of } 150 = 90$. B: $40\% 	ext{ of } 180 = 72$. C: $80\% 	ext{ of } 150 = 120$. D: $50\% 	ext{ of } 120 = 60$. Total jokes = $90 + 72 + 120 + 60 = 342$. Jokes sent neither by D nor by B = A + C = $90 + 120 = 210$. Percentage = $\frac{210}{342} 	imes 100 = 61.4\%$.

Percentage of WhatsApp Jokes

Explanation

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