in a class of 60 student, the number of student who passed biology is 6 more than the number who passed chemistry every student passed both at least one of the two subjects and 8 student passed both subject

Firstly we need to find how many students passed chemistry or biology

60-8=52 studdnts passed biology or chemistry

Let number of students who passed chemistry is x, than number of students who passed biology is 52-x.

So, 23 students passed chemistry, than

23+6=29 students passed biology

23 students passed chemistry and 29 students passed biology

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.  

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step-by-step explanation: