Question

A room has an area of 30 units. The width is 7 units smaller than the legnth. What is the length?
The answer choices are 3,7,10,13
thanks

Answer 1

Answer:

it is 10

Step-by-step explanation:

let length be x

width = x-7

so area = l x b

so

area= x into x-7

that is x= 10