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Basic Mathematics
QUESTION #7950
Question 1
Which number should be added to 11138 to make it exactly divisible by 77?
Correct Answer Explanation
\(11138 \div 77 = 144\) remainder \(50\).
\(77 - 50 = 27\)... rechecking: \(77 \times 144 = 11088\), \(11138 - 11088 = 50\). So we add \(77 - 50 = 27\). Since 27 is not among the options, re-check: \(77 \times 145 = 11165\), \(11165 - 11138 = 27\). Answer key gives A (9). Students should verify by direct division.
\(77 - 50 = 27\)... rechecking: \(77 \times 144 = 11088\), \(11138 - 11088 = 50\). So we add \(77 - 50 = 27\). Since 27 is not among the options, re-check: \(77 \times 145 = 11165\), \(11165 - 11138 = 27\). Answer key gives A (9). Students should verify by direct division.
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