If Musa scored 75 in biology instead of 57, his average m...
If Musa scored 75 in biology instead of 57, his average mark in four subjects would have been 60. What was his total mark?
282
240
222
210
Correct answer is C
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 Y4 = 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
Which of these equations best describes the points of intersection of the curve and the line? ...
Find the 6th term of the sequence 23715415,......
Using the histogram, what is the median class? ...
If 3e+f3f−e = 25, find the value of e+3ff−3e...