Questions in Grade High-school

Questions in Grade High-school

[Done] In a survey of 150 students, 90 students were taking algebra, and 30 were taking biology. 1. What is the least number of students who could have been taking both courses? 2. What is the greatest number of students who could be taking both courses? 3. What is the greatest number of students who could have been taking neither course?

[Done] You sell popcorn during your school's football games. Knowing that people usually buy more when the price is lower, how would you price your popcorn after halftime?

[Done] What is 0.142 in its standard form?

[Done] If 60 marks are 40%, what is the full marks?

[Done] A typical container of orange juice concentrate holds 12 fluid ounces (fl oz). The standard recipe is "Mix one can of concentrate with three cans of cold water." Olivia has a one-gallon container to fill with orange juice. She uses the standard recipe. How much concentrate does she need? (One gallon = 128 fl oz)

[Done] Is 17.967 greater or less than 17.69?

[Done] Unscramble the letters: "epocrp stolo".

[Done] A solution is either an acid or a base and it doesn't react with metal. Is its pH more likely to be 4 or 9? Explain your answer.

[Done] What did the scout say after fixing the little old lady's bicycle horn?

[Done] Is 15.07 a rational or irrational number?