A firm in Hong Kong and one in Thailand agree to jointly develop an engine-control microchip to be sold to North American auto manufacturers. They agree to split the development costs in a ratio of 8:3 (Hong Kong firm to Thailand firm), resulting in a cost of $9,400,000 to the Hong Kong firm. Find the cost to the Thailand firm.
Let x represent the cost to the Thailand firm. Then
\frac{8}{3} = \frac{9,400,000}{x}
8x = 3 • 9,400,000 Cross multiply.
8x = 28,200,000
x = 3,525,000 Divide by 8.
The Thailand firm’s share of the costs is $3,525,000.