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Mlima Co (6/13)

Jjason9111y ago
Hi Sir, In part (i) of the question i dont understand the workings of how they arrived at the keu=10.93%. In particular, how did they go from; 16.83%=keu+0.75(keu-4.76%)*1785/1400 to getting the answer of keu=10.93%. Im really bad at mathematics. Please help
John MoffatJohn MoffatTutor11y ago#1
first, safer to use decimals than %'s, so.... 0.1683 = keu + 0.75(keu - 0.0476)* 1785/1400 Multiply everything by 1400, so.... 0.1683 x 1400 = 1400 keu + 1785x0.75(keu - 0.0476) 235.62 = 1400keu + 1338.75(keu - 0.0476) Multiply everything in the bracket by 1338.75, so..... 235.62 = 1400 keu + 1338.75keu - 63.7245 So.... 299.345 = 2738.75 keu so keu = 299.345/2738.75 = 0.1093 (or 10.93%)
Jjason9111y ago#2
:O thank you so much.
John MoffatJohn MoffatTutor11y ago#3
You are welcome :-)
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