Answer:
5
Explanation:
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
Multiplication comes before Division, so we multiply 2/5 and 1/4. Multiply the numerator and denominators together to get 2/20, which can be simplified to 1/10. to divide 1/2 by 1/10, you need to multiply 1/2 by the reciprocal of 1/10, which is 10/1
1/2*10/1= 10/2 = 5
Therefore, the answer is 5