Nope, already simplified.
10%off 415 = 415 - (0.10 x 415) = 373.5
10% of 415 is 41.500
10 + 3 + 412 - 10 = 415
415/27 = 15.370370370..., or 15 10/27.
To round 415 to the nearest 10, we look at the digit in the tens place, which is 1. The digit to its right, 5, is greater than or equal to 5, so we round up. Therefore, 415 rounded to the nearest 10 is 420.
4.15 x 10^2
2 hours and 10 minutes.
It is 10 hours and 45 minutes.
415 has these factors: 1, 5, 83, 415.
420.
CDXV = 415