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?
Stream of thoughts:
248
The sum of his scores across the first 3 subjects is 50 + 70 + 66 = 186.

The average score over the 3 subjects which is his History score is = total / 3 = 186 / 3 = 62.

Therefore his score across all 4 subjects = 186 + 62 = 248.

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The answer is 248