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Average weights of 12 students in a class is 30kgs. two boys are left and two boys are joined with average of 25.if new average is (30+5/6) what is average of two boys left?

How to improve problems exposure? Will solving previous years aimcats and career launcher questions help to score 180+ in tier 2?

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In a class of 60 students there are 30 girls. The
average weight of these girls is 58 kg and aver-
age weight of the full class is 63 kgs. What is the
average weight of the boys of the class?

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16% varshik chakrawridhi byaj ki dar se kisi dhanrashi par 2 varshon me Rs 3179.52 byaj praapt hota h to vah dhanrashi gyat kijiye?

a sum of money kept in a bank amounts to rs. 1500 in 5 years and rs.2000 in 10 years at simple interest.find the sum.