The sum of Janos' age and David's age is 34 years. Five years ago the sum of twice Janos' age and three times David's age was 61 years. What are their present age?

Mrs. Johnson spent $611 buying lunch for 78 students. If all the lunches cost the same, about how much did she spend on each lunch?

What is the simplified form of 3a^4b^-2c^3

D=6, Dx=-6, Dy=-24, Dz=-30 what is the solution set

2/5+4/7 estimate: decide if each addend is closer to 0 or closer to 1. then estimate the sum or difference. this is a fraction question.

The simple interest on $600.00 at 5% per year for two years is?

A helicopter leaves central airport and flies north at 180 mi/hr. Twenty minutes later a plane leaves the airport and follows the helicopter at 330mi/hr. How long does it take the plane to overtake the helicopter

A rectangular piece of paper with length 29 cm and width 12cm has two semicircles cut out of it. Find the area of the paper that remains.

Kent earns $49,000 a year and has to pay $45 in taxes for every $1,000. How much taxes does he pay in one year? A. $2,049 B. $2,000 C. $2 205 D. $1,000

What is the surface area of a right rectangular prism whose dimensions are 3 by 6 by 8?

I am a two-digit number Both of my digits are even I am the product of two consecutive whole numbers The sum of my digits is greater than the product of my digits