So, the difference between their age is given by => 31 – 8 = 23 years. Now, let the age of his father be 'x'. Let the age of his son be 'x-23'. Also Read: Math Riddles with Answers: Logic Puzzles That ...

Explanation: To kill 7 rats, it would take 7 cats: 7 × 7 = 49 mins To kill 1 rat, it takes 1 cat, that is: 49/7 = 7 mins Since, the job is to kill 100 rats, it would take 1 cat, that is: 7 × 100 = 700 ...

(NEXSTAR) — Are you smarter than an Oklahoma fifth-grader taking their annual math assessment test? As another new school year is underway, it’s never a bad idea to know what the kids are learning — ...

(NEXSTAR) — Are you smarter than a Texas fifth-grader taking the STAAR Test? As another new school year begins, it’s never a bad idea to know what the kids are learning — or how hard the lessons are.

(NEXSTAR) — Are you smarter than a North Carolina fifth-grader taking their end-of-grade math test? As another new school year is underway, it’s never a bad idea to know what the kids are learning — ...

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