Discount combined

Hussein was allowed a discount of 11% for goods worth sh.8000 and a discount of 8.6% for goods worth sh.17000. What percentage discount was she allowed altogether?

Correct answer:

p =  9.368 %

Step-by-step explanation:

p1=11%=10011=0.11 p2=8.6%=1008.6=0.086  a=8000 b=17000  d=p1 a+p2 b=0.11 8000+0.086 17000=2342  p=100 a+bd=100 8000+170002342=9.368%

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