Answer:
a) 80 b) 40 c) 60 d) 30.
Step-by-step explanation:
30 read English and Mathematics.
10 read neither, so 130 - (30 + 10) = 90 students either read only English or only. Maths.
Number who read English = 2 * number reading Maths.
(a) Number reading English = 2/3 * 30 + 2/3 * 90
= 20 + 60 = 80
b) Number reading Maths = 1/3 * 30 + 1/3 * 90
= 10 +30 = 40
c) Those reading only English = 90 * 2/3 = 60.
d) Those reading only Maths = 1/3 = 90 * 1/3 = 30
