book Maths Puzzle Numerical Ability

2*square root of 27 + square root of 48
can this problem be solved? I thought the radicals had to be the same. If it can be solved can you show me how??

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book Other Question

Premuim coffee sells for $6.00 per pound, and regular coffee sells for $4.00 per pound.How many pounds of each type of coffee should be blended to obtain 100 pounds of a blend that Hello. I am having serious trouble on this one. THE SUM OF THREE CONSECUTIVE ODD INTEGERS IS 639. WHAT ARE THE INTEGERS? Thank you.