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Earlier discussion
1 older comment kept for context.
Akomolafe Temitope
Step-by-step explanation:
The total time taken from the point when john starts work and finishes the work is equal to 8 hours and 30 minutes.
Now, he takes a break of 90 minutes which is equal to 1 hour and 30 minutes.
So, the total time for which he works in a day is 7 hours.
If he does work for 7 hours in a day for 5 five days, then the total work time is equal to
7 × 5 = 35 hours