Find mystery number 1. the number is less than 190,000 and greater than 180,000 2. 5,000 more than the number has 187 thousands 3,200 less than the number has 400 hundreds

The number is less than 190,000 and greater than 180,000

5,000 more than the number has 187 thousands

2000 less than the number has 4 hundreds

180, 000 <n> 190, 000

180,000 + 2000 = n = 5000-187, 000

182,000 = n = 182, 000  

Or,  

 180, 000 <n> 190,000                    

 n + 5000= 187, 000                           n – 2000 = 180, 000

 n= 187, 000- 5000                             n = 180, 000 + 2000

 n= 182, 000                                       n= 182, 000

99

Step-by-step explanation:

split into triangle + trapezoid

A of tri. = =3 * 6/2 = 18/2 = 9

A of trap. = =(10+20)(6)/2 = 90

add the two areas together

9+90 = 99