Question

21 copies of non detailed text books cost Rs 745.50 find the cost of 55 copies

Answer 1

Rs 1952.5 will be cost for 55 copies

Answer 2

we can solve this by unitary method:-
if 21 copies costs rs. 745.50
then
the cost of 1 copy=745.50/21
the cost of 55 copies=745.50/21×55
=rs. 1952.5
hence, the cost of 55 copies is rupees 1952.5
ur answer friend.....