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Phổ biến Word Problems >

The product of two consecutive positive even integers is 80. Find the value of the greater integer.

Lời Giải

T h e p ro d u c t o f tw o co n sec u t i v e p os i t i v e e v e n in t e g ers i s 80. F in d t h e v a l u e o f t h e g re a t er in t e g er .

Lời Giải

The largest number : 10

Các bước giải pháp

Represent the numbers with

x

:

First number : x

Consecutive number : x + 2

A.T.Q.:

x (x + 2) = 80

Giải

x (x + 2) = 80 : x = 8, x = - 10

Select positive solutions:

8

x + 2 = 8 + 2 = 10

Select the largest solution:

10

The largest number : 10

Ví dụ phổ biến

Joan is 3 times as old as Martha, and Pia is three years younger than Martha. If the sum of all their ages 3 years ago was 63, what are their ages now?forty five is equal to twelve more than thrice a number You deposit 1500 in an account that pays 7% annual interest. Find the balance after 2 years when the interest is compounded daily. Round your answer to the nearest cent.four less than triple a number 7400 dollars is placed in an account with an annual interest rate of 6.25%. To the nearest tenth of a year, how long will it take for the account value to reach 39200 dollars?