### Sport day lunch set

Question Sample Titled 'Sport day lunch set'

On the sports day, the student union is ordering lunch sets for some students. Each student can choose either a sushi set or a Yangzhou fried rice lunch set. The number of students who choose sushi set is three times the number of students who choose Yangzhou fried rice lunch set. It is given that the number of the students is ${404}$ . Let ${x}$ be the number of students who choose sushi set and ${y}$ be the number of students who choose Yangzhou fried rice lunch set.

 (a) Find the values of ${x}$ and ${y}$. (b) The price of sushi set and Yangzhou fried rice lunch set are $39.6$39.6$ and$57.7$57.7$ respectively. Savannah estimates that the total price of the lunch for the students is not more than $17400$17400$. Use the method of estimation, or otherwise, explain whether Savannah is correct or not.  (4 marks) 題解  (a) ${x}$ $={404}\times\dfrac{{3}}{{{1}+{3}}}$  $={303}$ 1A ${y}$ $={404}\times\dfrac{{1}}{{{1}+{3}}}$  $={101}$ 1A  (b) Total price $={39.6}\times{303}+{57.7}\times{101}$  $>{39}\times{303}+{57}\times{101}$ 1M  >$17574$>17574$  $\therefore$She is incorrect. 1A

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