On a exam with 80 problems, Roger solved 68 of them. What percentage of the problems Dudu he solve?

Three friends got the prize money worth $231,000 . The first friend would get four times the amount of the third friend's portion. The third friend would get four times the amount of the second friend's portion.

How can I learn to do standard notation and scientific notation?

In a shipment of new books for a library, 5/12 of the books were poetry and 2/5 were bographies. The remainder of the books in the shipment were misteries. What fraction of the books in the shipment were misterie?

Distance between 12 and - 5 on a number line

Write the simplest form of the expression (64/729) ^ (-1/6)

Andrew is home one winter day studying for an exam. It is lunchtime and he is hungry. Instead of making a sandwich from roast beef in the fridge, he drives to Taco Bell and spends $4 for 2 tacos, a burrito and a Dr. Pepper.

4 times the difference of a number and 2 is 13 A.) 4x-13=2 B.) 4 (x-2) = 13 C.) 4=13 (x-2) D.) 4x-2=13

Change 530% to a fraction

What is the answer to -4+6p-16=3p-5p

Sara, Kim, and John own a painting company. To paint a particular home, Sara estimates it would take her 4 days. Kim estimates 5.5 days. John estimates 6 days. How long would it take them to work together to paint the house.