The following table shows the number of bundles of iron bars of 5 different brands sold from a shop during a given week.
The number of iron bars in each bundle of B1 and B3 is 5. The number of iron bars in each bundle of B2, B4 and B5 is 4. What is the total number of iron bars sold from the shop during that week of all the 5 brands taken together?
Total number of bundles of brand B1 and B3 = 60+40 = 100
The number of iron bars in each bundle of B1 and B3 is 5.
total number of iron bars sold from the shop during that week of brand B1 and B3 = $$5\times100$$ = 500  Eq.(i)
Total number of bundles of brand B2, B4 and B5 = 50+45+55 = 150
The number of iron bars in each bundle of B2, B4 and B5 is 4.
total number of iron bars sold from the shop during that week of brand B2, B4 and B5 = $$4\times150$$ = 600   Eq.(ii)
Total number of iron bars sold from the shop during that week of all the 5 brands taken together =Â Eq.(i)+Eq.(ii)
=Â 500+600
= 1100
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