Henry scored 50 points on his Geography test, 70 on his Math test and 66 on his English test. If his History score is the average of these 3 scores, what was his total score across all 4 subjects?
The sum of his scores across the first 3 subjects is 50+70+66 = 
<gadget id="calculator">50+70+66</gadget>
<output>186</output>
186.
The average score over the 3 subjects which is his History score is = total/3 = 186/3 = 
<gadget id="calculator">186/3</gadget>
<output>62</output>
62.
Therefore his score across all 4 subjects = 186+62 = 
<gadget id="calculator">186+62</gadget>
<output>248</output>
248.

<result>248</result>