Ann and ben translate documents from German to English. A set of documents that would take ann 9 days would take ben 11 days. Ann starts to translate the documents. After 3 days ann and ben both work on translating the documents. it will take an extra 3 days and H hours to complete the work.
work out H, giving your answer in the form H=

(H can be left as a top heavy fraction or given in decimal form.​