you have been given a physical balance and 7 weights of 43 , 45 , 30 , 33 , 28 , 37 and 55 kgs . keeping weights on one pan and object on the other , what is the maximum you can weigh less than 145 kgs .
55 + 43 + 45 = 143 answer : b
add(add(add(45, 30), 33), 37)