Out of 150 golf clubs present at a shop only 120 are in a condition to be sold. If the average weight of 20 clubs is 200 grams, 40 clubs is 250 grams and 60 clubs is 300 grams. If each of the non – saleable club weighs 500 grams, what is the average weight of all the clubs?

Correct Answer: 313.3 grams
The total weight: 20 clubs of 200 grams = 20 * 200 = 4000 grams 40 clubs of 250 grams = 40 * 250 = 10000 grams 60 clubs of 300 grams = 60 * 300 = 18000 grams 30 clubs of 500 grams = 30 * 500 = 15000 grams Total weight = 4000 + 10000 + 18000 + 15000 = 47000 grams Total number of clubs = 150 Average clubs = 47000 / 150 = 313.3 grams.