261 ÷ ? × 15 + 270 = 405	Select
A) 24  B) 25  C) 36  D) 39  E) 43
Explanation:   261 ÷ ? × 15 = 405 - 270= 
<gadget id="calculator">405 - 270</gadget>
<output>135</output>
135   (261 × 15)/?= 135   ? = (261 × 15)/135 = 39   Answer: Option 39
<result>D</result>
261 ÷ ? × 15 + 270 = 405