Question

A box contains 300 marbles. 3/5 of the marbles are red in colour. 2/3 of
the remaining are black in colour. How many black marbles are there in
the box? *​

Answer 1

Answer:

300 marbles are there

(3/5)×300=180 marbles. in red

remaining=120

120×2÷3==80

120-80 is. black in colour

40 are in black col