More Algebra
Algebra
Level
2
Mr. Big is the headmaster of his school. He decided to do a survey about which child liked which fast food restaurant. He asked 50 students. 10% said Mcdonalds. 20% said KFC. 50% said Burger king. Knowing this, how many students said pizza hut. Each student can only answer once
20
10
25
15
5
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1 solution
There are 50 students. 10% is worth 5 students. If 10% like mcdonalds that means it is 5 students. 20% said they like KFC, That means 10 students like Kfc. Up till now
there are 15 students. 50 % like Burger King. That is 25 students. Now add all up (5+10+25=40) The difference between 40 and 50 is 10. The answer is 10!!!