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費用 ひよう対 たい効果 こうかでした
hiyōtaikōkadeshita

敬
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Noun
, 
Desu Copula

The polite past form of 費用対効果

1. Cost-effectiveness was.; It was cost-effective.

Past/Perfective
, 
Polite

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費用対効果でした

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