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Earlier discussion
2 older comments kept for context.
Ali Benjamin
Let's break it down step by step; shall we💁🏾♂️
Okay 👌
- Bayo's average score in 4 subjects (Mathematics, Physics, Chemistry, and Biology) is 67%. So, his total score in these 4 subjects is: 67% x 4 = 268%.
- When his score in History is added, the average rises to 71% for 5 subjects. So, his total score in all 5 subjects is: 71% x 5 = 355%.
- To find his score in History, subtract his total score in the 4 subjects from his total score in all 5 subjects: 355% - 268% = 87%.
Therefore, Bayo's score in History is 87%. (D)
Olajide Taiwo
Assume all the score are 67%
67\( 67%\times4= 268
268+x\div5= 71%
Divide through by 5
268+x= 5\times71
268+x= 355
Collect like terms
X= 355-268
X= 71% \)