Wednesday, July 10, 2013

SAT math question - Divisibility

SAT math question - Divisibility


"When an integer number x is divided by 3, the quotient is 9 and the remainder is 1. Find the value of x "

Answer
http://www.satmath4u.com/threads/46-sat-math-divisibility

Given two integers a (dividend) and b (divisor), we can divide one by the other with a remainder: a=qb+r
the quotient, q indicates how many times b fits in a and the remainder r is what's left after that and hence 

Therefore for your question we have

x=3*9+1=28

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