Answer:

[tex]200 \times 12 = 2400notebook(1dozen = 12) \\ 420 \div 12 = 35{c.p \: of \: per \: notebook} \\ 2400 \times 35 = 84000 \\ 84000 + 2400 = 86400 \\ now \: s.p \\ s.p \: of \: one \: book = 2400 \times 36 = 86400 \\ so \: it \: it \: not \: a \: loss \: neither \: profit[/tex]

so yeah it was weird

Answer:

86400

Step-by-step explanation:

Francis bought=200 dozen notebooks at ₹420

On per dozen he spent =₹2400 for transportation.

[tex]200 \times 12 = 2400 \: notebooks \\ 420 \div 12 = 35 \\ cp \: per \: notebook \\ 2400 \times 35 = 86400 \\ sp \: \: of \: one \: m \\ notebook = 2400 \times 36 = 8600 \\ neither \: profit \: nor \: loss[/tex]