30% of kids play one sport 45% of kids play another and 20 kids play another. How many kids in all

The selling price of an item is $650 It is marked down by 10%, but this sale price is still marked up from the cost of $450 Find the markup from cost to sale price.

Act scores need improvement how do you do it? Work hard or just smart or both?

Workout the circumstance of a circle with radius 9 cm take π to be 3.142 to 1 decimal place

A cashier collects 124 bills totaling $920 dollars. Assuming that the cashier collects $5, $10, and $20 bills, and that she collects twice as many fives as tens, how many tens does she collect?

I was wondering what 1 plus 1 is because i dont know what it is

What is 25 percent of 32?

If a number is increased by 6 and the result is divided by 2, the number 5 is obtained. Find the original number?

Lauren is going to drive from her house to City A without stopping. Lauren plans to drive at a speed of 35 miles per hour, and after driving for 2 hours, she will be 70 miles away from City A.

If c = 4 and d = 5, find c:d.

31/8 as an improper fraction