The weekly pocket‐money (in rupees) received by some students is grouped as follows:…

MATHEMATICS · Single correct · CBSE · Mathematics · Statistics · Statistics

Problem

The weekly pocket‐money (in rupees) received by some students is grouped as follows:
Pocket-money (₹)Frequency
0–10x
10–208
20–3012
30–406
40–504
The median amount is found to be ₹22.5. Find the missing frequency x. (a) 77 (b) 88 (c) 1010 (d) 44

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