John is 12 year old and his brother is four times as old.When john turns 20, how old will the brother be?

a total of 10,000 is deposited into two simple interest accounts. on one account, the simple interest rate is 4.5%[..]

in your lab, you have a special meaasuring tool that can measure the width of tiny objects. you can even measure the[..]

You have 2 slatwater solutions. One consist of 20% salt,and the other consists of 15 % salt. A. If you want to[..]

Today only, a table is being sold for $513. This is 76% of its regular price. what was the price yesterday?

An exponential sequence(GP) of positive terms and a linear sequence (AP) have the same first term. The sum of their[..]

A mother is 23 years older than her son. In 7 years she will be twice as old as the daughter. How old is each now?

the sum of two number is 36. If the larger is divided by the smaller the quotient is 2 and the remainder is 3. Find[..]

40 liters of a 60% salt solution are reduced to a 45% solution. How much solution must be drained off and replaced[..]

The width of a rctangular room is 2feet less than one-half its length. If the perimeter is 56 feet, find the length[..]