there were 1200 cards in a box i out of 5 of them were red colour 40 percent of them were green colour and rest were blue and yellow colours cards if there were 240 blue colour cards how many cards were of yellow colour

Answer

475

Step by step explanation

Since there were 40 % green colour cards

40/100*1200

= 480

No. of blue colour cards = 240

No. of red colour cards = 5

Hence number of yellow colour cards = 1200 - (5+240+480)

= 1200-725

= 475 yellow coloured cards