There are 32 pupils in Mr Patel's class. There are 18 girls and 14 boys. All the pupils took a Maths test. The mean score for the girls was 79%. The mean score for the boys was 83%. Work out the mean score for the whole class.

1 is c

2 is a

3 is a

step-by-step explanation:

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!

a

step-by-step explanation:

the answer is a

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %