10 പേരുള്ള ഒരു കൂട്ടത്തിൽ നിന്നും 75 കി.ഗ്രാം ഭാരമുള്ള ഒരാൾ പോയശേഷം പുതിയൊരാൾ വന്നപ്പോൾ ശരാശരി ഭാരം 1.5 കി.ഗ്രാം വർധിച്ചുവെങ്കിൽ പുതിയ ആളുടെ ഭാരം?
A70
B75
C90
D95
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