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Phổ biến Word Problems >

Victor is y years old.:His brother Fred is four years old than Victor.:The product of their ages is 780:Set up an equation to represent this information.

Lời Giải

Vi c t or i s y ye a rs o l d . : H i s b ro t h er F re d i s f o u r ye a rs o l d t han Vi c t or . : T h e p ro d u c t o f t h e i r a g es i s 780 : S e t u p an e q u a t i o n t o re p rese n t t hi s in f or ma t i o n .

Lời Giải

Victor^{'} s age is : 26

Fred^{'} s age is : 30

Các bước giải pháp

Translate the problem into an equation:

y = z - 4, yz = 780

y = z - 4, yz = 780 : (y = 26, z = 30 y = - 30, z = - 26)

Thay

Victor^{'} s age is : 26

Fred^{'} s age is : 30

Ví dụ phổ biến

Brooklyn is going to invest in an account paying an interest rate of 3.5% compounded continuously. How much would Brooklyn need to invest, to the nearest ten dollars, for the value of the account to reach 640 in 9 years?Hassan is going to invest in an account paying an interest rate of 2.3% compounded continuously. How much would Hassan need to invest, to the nearest ten dollars, for the value of the account to reach 1,130 in 8 years?Alexander invested 240 in an account paying an interest rate of 2.3% compounded annually. Assuming no deposits or withdrawals are made, how much money, to the nearest dollar, would be in the account after 9 years?three more than the quotient of a number and 6 equals 7 Michael is going to invest in an account paying an interest rate of 6.7% compounded continuously. How much would Michael need to invest, to the nearest dollar, for the value of the account to reach 100,000 in 14 years?