A block of height 120mm is placed on top of another block with a height of 1.50 m. What is the height of the two blocks together? (1000mm = 1m)

a) 1.72 m

b) 1.62 m

c) 2.70 m

d) 121.5 m

We will first convert all units to meters and then solve the problem.

We are given that:

1000 mm = 1 m

120 mm = ? meters

using cross multiplication:

120 mm = (120*1) / 1000 = 0.12 m

Now, when the two objects are placed over each other, their total height is the result of summation of both heights, therefore:

total height = 0.12 + 1.5 = 1.62 m

Based on the above calculations, the correct choice is:

b) 1.62 m