Answer:
6.375 tons or 6 3/8 tons
Explanation:
According to Given data, calculation are as follows,
Sunburst pebbles = 2 1/2 tons or 2.5 tons
Black polished pebble = 3 1/4 tons or 3.25 tons
River pebble = 5/8 tons or o.625 ton
So, total weight of pebbles are as follows,
Total weight = 2.5 tons + 3.25 tons + 0.625 ton
= 6.375 tons or 6 3/8 tons
Hence, total weight of pebbles was 6 3/8 tons.