In an examination - 80% of the boys passed in English and 85% passed in Mathernatics - while 75% passed in both. If 45 boys failed in both. The number of boys who sat for the exarmination Was:

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In an examination - 80% of the boys passed in English and 85% passed in Mathernatics - while 75% passed in both. If 45 boys failed in both. The number of boys who sat for the exarmination Was: