MO Z8–I–4 2017
Robots Robert and Hubert assemble and disassemble coffee grinders. Each of them, however, assembles a grinder four times faster than the other one disassembles it. When they came to the workshop in the morning, several grinders were already assembled there.
At 9:00 Hubert started to assemble and Robert to disassemble, exactly at 12:00 Hubert finished assembling one grinder and Robert finished disassembling another. Together during this shift 27 grinders were added.
At 13:00 Robert started to assemble and Hubert to disassemble, exactly at 19:00 Robert finished assembling the last grinder and Hubert finished disassembling another. Together during this shift 120 grinders were added.
In how long does Hubert assemble a grinder? In how long does Robert assemble it?
Your answer:
At 9:00 Hubert started to assemble and Robert to disassemble, exactly at 12:00 Hubert finished assembling one grinder and Robert finished disassembling another. Together during this shift 27 grinders were added.
At 13:00 Robert started to assemble and Hubert to disassemble, exactly at 19:00 Robert finished assembling the last grinder and Hubert finished disassembling another. Together during this shift 120 grinders were added.
In how long does Hubert assemble a grinder? In how long does Robert assemble it?
Your answer:
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