A motorist must complete 180-mile trip is 4 hours. If he averages 50 miles an hour for the first three hours of the trip , how fast must ( in terms of mile per hour ) he travel in the last hour ?

A 40-meter long rope is cut into two unequal pieces. If one piece is 18 meter longer than the other, what is t...

When 4 is added to 1/2 of a number, the result is 14. What is the number ?

A jar contains red balls and green balls in the ratio 3:1. If the jar contains only the two types of balls, wh...

What value of x satisfies to equation x-2=2-x ?

If A : B =3 : 4 and A : C =6 : 5 then C : B = ?

Out of 7,500 applications for a recruitment test, 1,500 failed to appear for the test. What percent of the tot...