Ashopowner blends three types of tea, a, b,cbin the ratio 6: 4: 7. if the mass of tea c in the mixture is 28kg, find the difference in the masses of the other two types of tea

7:28 = 4:b = 6:a
you can notice that you multiply 7 by 4 to get 28, so you multiply 4 by 4 to get b and 6 by 4 to get a. or you can say that 7/28 = 4/b and 7/28 = 6/a and solve it the normal way.

b=4×4=16
a=6×4=24

24-16 =8

This polygon has 4 sides
180(4-2) = 180(2) = 360 degree
80+90+2x + 3x = 360
170+5x = 360
5x = 190
x= 38
measure of angle t is 2(38)= 76
the answer is c. trust me
hope this !