Answer:
a. 140%
b. 7 jackets
Explanation:
Each coat costs $55.
He sells it for $77.
77/55 × 100% = 140%
The selling price, $77, is 140% of the purchase price.
He buys each jacket at $35.
He marks up the price the same way he does with the coats.
The selling price of each jacket is
140% of $35 = 1.4 × $35 = $49
$340/$49 = 6.93
He must buy at least 7 jackets to have a sales amount of at least $340.