+0  
 
0
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5
avatar+377 

gosh, please guys, i need help here, I just cannot at all comprehend these sums...please help..

 

32 tables are stacked in a room, some are 3-legged and some are 4-legged. If there are 115 legs, how many tables are there in the room of each type?

 Apr 23, 2018
 #1
avatar+10057 
+2

How many tables are there in the room of each type?

laugh

 Apr 23, 2018
 #3
avatar+377 
+1

Hi Omi67,

 

Thank you..I see it now, I just CANNOT "see" the sum when I face it...frustrating!!..Thank you kindly!!

juriemagic  Apr 23, 2018
 #2
avatar
+2

Let the 3-legged tables = T

Then the 4-legged tables =32 - T

 

3T + 4(32 - T) =115

3T + 128 - 4T =115

-T =115 - 128

-T =- 13     multiply both sides by -1

T = 13 - 3-legged tables

32 - 13 = 19 - 4-legged tables.

 Apr 23, 2018
 #4
avatar+377 
+2

guest,

 

thank you very much, it frustrates me that I cannot "see" the problem at first!..Thanx a lot!

juriemagic  Apr 23, 2018
 #5
avatar+99123 
+1

It just takes practice :)

Melody  Apr 23, 2018

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