the average weight of 10 men is increased by 1 ½ kg when one of the men who weighs 48 kg is replaced by a new man . what is the weight of the new man ?
"since the average has increased by 1.5 kg , the weight of the man who stepped in must be equal to 48 + 10 x 1.5 48 + 15 = 63 kg ans : ' b '"
add(48, multiply(10, add(1, divide(const_1, 1))))