Since 210 is a factor of 420, it is automatically the GCF.
The GCF is 12.
The GCF is 35.
The GCF is 60.
The GCF is 12.
The GCF is 70.
The GCF is 4.
The GCF is 70.
The GCF is 40.
The GCF is 84.
The GCF of 531 and 280 is 1.
75% of 420= 75% * 420= 0.75 * 420= 315