Multiply and simplify.

2/3 * 2 1/5 * 3/4=?

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4

The following numbers will result in a quotient that is less than 1 when it is divided by ? a.2% e. 1 and 2/3 b.x2 f. 1/5 c. 3/10 g. 7/15 d. 5/9

When a number is decreased by 9.9% the result is 40. what is the original number to the nearest tenth? super urgent