10:3 is ________________ form of the ratio 50:15.
50:15 can be written as 5015=5×105×3=10310 and 3 have no common factor other than 1, so 10:3 is the simplest form of the ratio 50:15.
−1[a−3{b−4(a−¯¯¯¯¯¯¯¯¯¯¯¯b−8)+4a}+10] equals
Do the ratios 15 cm to 2 m and 10 sec to 3 minute form a proportion?