Question

Please help to solve # 1 #3

Answer 1

1. Now let's first see what this would be added together.

1.5 + 3 + 4 = 8.5

And multiplied:

1.5 * 3 * 4 = 18

So basically, here, we can multiply by a decimal to decrease the multiply and increase the add, because if we increased the number, the multiplication would increase at a much larger scale.

So here, let's see what 18 * .5 is.

It's 9.

And 8.5 + 0.5 is 9.

So the fourth item was priced at 50 cents.

3. So if Deion Sander's 60 yard-dash time of 5.6 seconds was three times faster then Larry Lewis', we can first convert 60 yards to 100 yards.

It's 10/6 times more.

So we can just multiply 5.6 by 10/6.

5.6 * 10/6 = 56/6 = 28/3

Now since it's three times slower then that,

28/3 * 3 = 28

So he ran the 100 yard dash in 28 seconds.