120=2×2×2×3×5
40=2×2×2×5
The greatest common factor of 120 and 80 is 2× 2× 2× 5 = 40.
So the maximum side length of the selected square can be 40 cm.
2. It takes 65,438+02 days for Team A, 65,438+05 days for Team B and 9 days for Team C to build a highway ... How much can Party A, Party B and Party C do in one day?
12 1+ 15 1+9 1 = 180 47
How much can B-C cooperation do in one day?
151+91= 8 of 45
How much can A, B and C do in three days?
(1+02 of 65438, 0 of 65438+9 of 65438) × 3 = 47 of 60.
The toy factory plans to produce 560 toys in the first half of the year, and complete 360 toys in the first quarter. What percentage was completed in the first quarter?
360 ÷ 560 = 65438+9/04
If the output in the second quarter is the same as that in the first quarter, how many times is the actual output in the first half of the year? (expressed in fractions)
(360+360)÷560 = 7 choose 9 = 1 and 7 choose 2.