The average weight of 15 girls were recorded as 54 kg. If the weight of teacher was added the average increased by 2 kg. What was the teacher's weight.
A75 kg
B95 kg
C78 kg
D86 kg
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തുടർച്ചയായ 13 എണ്ണൽ സംഖ്യകളുടെ മധ്യത്തിലുള്ള സംഖ്യ 31 ആണ്. എങ്കിൽ ആ 13 സംഖ്യകളുടെ തുക എത്ര?