**Paper 1 Higher - Sample Assessment Q24**

24) John has an empty box.

He puts some red counters and some blue counters into the box.

The ratio of the number of red counters to the number of blue counters is 1 : 4

Linda takes at random 2 counters from the box.

The probability that she takes 2 red counters is 6/155

How many red counters did John put into the box?

(4 marks)

He puts some red counters and some blue counters into the box.

The ratio of the number of red counters to the number of blue counters is 1 : 4

Linda takes at random 2 counters from the box.

The probability that she takes 2 red counters is 6/155

How many red counters did John put into the box?

(4 marks)