Tim has 3 dogs named Rocky, Dash and Tango. Rocky and Dash together weigh 120 pounds. Dash and Tango
together weigh 280 pounds. All three together weigh 310 pounds. What is Dash’s weight? Choose the correct option:
A) 30 lbs
B) 45 lbs
C) 60 lbs
D) 80 lbs
E) 90 lb
Given:   Weight of Rocky + Dash = 120 ----- (i)   Weight of Dash + Tango = 280 ----- (ii)   Weight of Rocky + Dash + Tango = 310 ----- (iii)   Putting the value of Rocky + Dash from equation (i) in equation (iii)   120 + Tango = 310   Tango = 190 lbs   Now putting the value of Tango in equation (ii)   Dash + 190 = 280   Dash = 90lbs   Option 90 lb
<result>E</result>
Tim has 3 dogs named Rocky, Dash and Tango. Rocky and Dash together weigh 120 pounds. Dash and Tango
together weigh 280 pounds. All three together weigh 310 pounds. What is Dash’s weight?