Question
If −5<p<−2 and 7<q<9, then what is the range of p + q?
Answer: Option B
:
B
−5<p<−2 and 7<q<9
Adding two inequalities with same natured inequalities will preserve the sign.
So adding the two inequalities:
−5+7<p+q<−2+9
⇒2<p+q<7
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:
B
−5<p<−2 and 7<q<9
Adding two inequalities with same natured inequalities will preserve the sign.
So adding the two inequalities:
−5+7<p+q<−2+9
⇒2<p+q<7
Was this answer helpful ?
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