Phosphor-bronze is a mixture of Copper Tin and Phosphorus in the ratio by mass 185:14:1. Find the mass of copper in a phosphor-bronze casting of mass 27.2kg. Please help and show all workings necessary. this is due tomorrow ​

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

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step-by-step explanation:

she will do 520 after 52 weeks

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