The first option is correct because if the values are greater than 90, it can mean that its less than or equal to 90. It can't, in any way be less than 90.
If it is less than or equal to, then the first statement has to be false, that it is greater. This means the statement is negated because they can't work together.
To get the result we can use knowledge that reading is 2 times longer than HW. To find this value we just have to multiply 42 times 2 so 40*2=80 Its 1 hour and 20 min - its the result
