Exact form: 169/28
decimal form: 6.03571428
mixed number form: 6 1/28
Answer:
256
Step-by-step explanation:
256 is 16 squared.
225 is 15 and 289 is 17.
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
If you know the answer to 50 x 4 = 200 then you can just add the other zeros
