It has been observed in one country that 56 out of 100 births is a baby with brown eyes. In 670 births how many[..]

During a 1 hour television program, there were 22 commercials. Some commercials were 15 second and some were 30[..]

A child is collecting state quarters and new $1 coins. If she has a total of 25 coins, and the number of quarters is[..]

A boat takes 1.5 hour to go 12 mile upstream against the current. It can go 24 mile downstream with the current in[..]

How many gallons of a 25% antifreeze solution and a 15% antifreezed solution must be mixed to obtain 15 gal of a 23%[..]

Blake has a total of $4000 to invest in two accounts. One account earns 2% simple interest, and the other earns 5%[..]

Two angles are supplementary. The measure of one angle is 9 degree more than twice the measure of the other angle.[..]

Eight times the smaller of two numbers plus 2 times the larger number is 44. Three times the smaller number minus 2[..]

In a right triangle, one of the acute angles is 9 degree less than twice the other acute angle. Find the measure of[..]

a 4 ft piece of pvc pipe is cut into three pieces. the longest is 12 in longer than twice the smallest piece. the[..]