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Phổ biến Word Problems >

The product of two consecutive positive integers is 20. Find the value of the lesser 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 in t e g ers i s 20. F in d t h e v a l u e o f t h e l esser in t e g er .

Lời Giải

The smallest number : 4

Các bước giải pháp

Represent the numbers with

x

:

First number : x

Consecutive number : x + 1

A.T.Q.:

x (x + 1) = 20

Giải

x (x + 1) = 20 : x = 4, x = - 5

Select positive solutions:

4

x + 1 = 4 + 1 = 5

Select the smallest solution:

4

The smallest number : 4

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