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The average age of a group of 12 students is 20years. If 4 more students join the group, the average age increases by 1 year. The average age of the new students is

🗓 Dec 20, 2024

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Sreosi Saha ~ India 🌐 India
Total age of 12 students = 12 * 20 = 240 and the total age of 16 students = 21*16 = 336.



Let the average age of 4 new students be x.



Therefore total age of the new students = 4x.



Hence the total age of 16 students = 240 + 4x = 336 => x = 24.
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Anonymous 🌐 Punjab
@Sreosi Saha ~ India
pls, explain the figure (21) ??
21*16
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