light glows for every 15 seconds. how many max. times did it glow between 1: 57: 58 and 3: 20: 47 am.
Pick.
A) 380 times B) 381 times C) 382 times D) 392 times E) 331 times
<gadget id="calculator">2 + 47</gadget>
<output>49</output>

<gadget id="calculator">2 + 60</gadget>
<output>62</output>

<gadget id="calculator">20 + 62</gadget>
<output>82</output>

<gadget id="calculator">82 * 60</gadget>
<output>4_920</output>

<gadget id="calculator">49 + 4_920</gadget>
<output>4_969</output>

<gadget id="calculator">4_969 / 15</gadget>
<output>4_969/15 = around 331.266667</output>

<result>E</result>
light glows for every 15 seconds. how many max. times did it glow between 1: 57: 58 and 3: 20: 47 am.
divide(add(add(const_2, 47), multiply(add(20, add(const_2, const_60)), const_60)), 15)
"time difference is 1 hr , 22 min , 49 sec = 4969 sec . so , light glows floor ( 4969 / 15 ) = 331 times . answer : e"