If ‘a’ and ‘b’ varies directly at a = 6 when b = 2. If a = 24 then find the value of b?

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4