In class 6, 80percent of the children like crisps.

75percent of the children who like crisps also like chocolate.

in class 6 what percentage of the children like both crisps and chocolate.

80% like crisps
75% of the 80% like chocolate.

What percent of the total are the children who like chocolate and crisps?

75% of 80% = 60%

This 60% of children like chocolate and crisps

other answer is correct. i had used the radius of the radius somehow. a website:

well what did you do it matters what you did : )

step-by-step explanation: