Question

a 10 rupee coin weight 12 gram how many 10 rupee coin are there in a bag weighing 2 kg 868 gram​

Answer 1

$2kg \: 868gm \: = 2 \times 1000 + 868gm \\ = 2000 + 868gm \\ = 2868gm$

hence the weight of the bag is 2868 gm

now,

weight of one coin = 12 gm

so, no. of total coins =

$2868 \div 12 = 239$

hence, total no. of ten rupees coins in the bag = 239.