book Maths Puzzle Numerical Ability

A deliver truck has a load of 840 items you ordered. If it takes1 1/2 minutes to unload a dozen of items , how long will it take to unload all of them?
I got 70 min by dividing 12

Read Solution (Total 0)

book Other Question
Please help me solve this equation:

0.5 = -2.5 + x How do i do this problem

(1/2y^2 z+ 3/4yz-1/8z^2)+(3/4y^2 z+3/4yz+z^2)