Shouldn't it be "at a cost of RM4 billion" instead?

English as a Second Language English Vocabulary, Grammar and Idioms
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The Ulu Padas Hydroelectric Dam, which is expected to be completed in 2029 with a cost of RM4 billion, has a power supply capacity of 187.5 megawatts. A study is underway for a water supply of 6,000 million litres per day.

Shouldn’t it be “at a cost of RM4 billion” instead?

Thanks.

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It should be ‘at the cost of’.

For those who didn’t know: RM, the Malaysian ringgit, is the currency of Malaysia.

Hope this helps.

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