Correct Answer: Option C

Explanation

Let x represent Musa's total mark when he scores 57 in biology and Let Y represent Musa's total mark when he now scored 75 in biology, if he scored 75 in biology his new total mark will be \(\frac{Y}{4}\) = 60, y = 4 x 60 = 240

To get his total mark when he scored 57, subtract 57 from 75 to give 18, then subtract this 18 from the new total mark(ie. 240)

= 240 - 18

= 222

• The addition of water to calcium oxides leads to:? Answer this

  3 Answers   ·   Chemistry   ·   1 hour ago
• How do literature students answer questions when practicing. Because some questions are completely out of syllabus. I don't understand oooo.... Answer this

  1 Answers   ·   Literature in English   ·   18 hours ago
• Can I get all detail about literature like smilie metaphor etc? Answer this

  0 Answers   ·   1 hour ago