Depends really how big the wheelbarrows are and how much they weight.
There are 15 wheelbarrows that are in one tipper.
According to the weblink below, there were 40 wheelbarrows on the First Fleet.
18
about 146,000,000 were sold in the US
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how many hot tubs are sold annually in the US
All hardware stores sell wheelbarrows. Ace sells a range of wheelbarrows starting at 60$ for a small wheelbarrow. They also sell heavy duty carts and wheelbarrows.
100.000.000 ipods were sold in the us
No Romans did not use wheelbarrows the wheel barrows were practicaly invented after.
Depends on the size of the wheelbarrow
12.8 million cars got sold in 2011 in the US