Number of students who secured first class in English only is 20
Step-by-step explanation:
- Step 1: Find the number of students who secured first class in English only.
Total number of students who secured first class in English or Maths, T = 80
Number of students who secured first class in Maths, M = 50
Number of students who secured first class in both English and Maths, EM = 10
⇒ Let the number of students who secured first class in English only be x.
Total students with first class, T = M + EM + x
⇒ 80 = 50 + 10 + x
⇒ 80 = 60 + x
∴ x = 80 - 60 = 20
The answer would be -3.333333
Step 1: (1÷3)= 0.333333
Step 2: 3+0.333333= 3.333333
Step 3: Finally you would bring the negative sign down and the answer would be -3.333333! I hope this helps :)
Mary worked 22 hours.
To solve first you would subtract the amount she made in tips from her total earnings (317-185)
= 132
Then you divide that answer by her hourly salary of $6 (132/6)
=22
Answer:
x = 3, y = 19
Step-by-step explanation:
x = 3, y = 4x + 7
Substitute x =3 into the second equation
y =4*3+7
y = 12 +7
y = 19
x = 3, y = 19
