let cat food = x
total plus 5% = 105% = 1.05
1.05 * (11.50 + X) = 16.80
12.075 + 1.05x = 16.80
1.05x = 16.80-12.075
1.05x = 4.725
x = 4.725 / 1.05
x= 4.50
the cat food cost $4.50
11.50 +4.50 = 16.00
16.00 * 0.05 = 0.80
16.00 + 0.80 = 16.80
2.5 kg-750grams=1.75 kilograms
The answer would be D:9.2
Dance (D) + Rap (R) + Country (C) = 1,075 songs
D = 3R
C = R + 105
RAP
Subtract 105 from both side:
(3R) + R + (R + 105) = 1,075
-105 -105
Combine all R's:
(3R) + R + R = 970
5R = 970
Divide both sides by 5:
5R = 970
/5 /5
R = 194
DANCE
D = 3(R)
D = 3(194)
D = 582
COUNTRY
C = R + 105
C = 194 + 105
C = 299
So, the DJ has a total of 194 rap songs, 582 dance songs, and 299 country songs.
12. no, because if you combiene (add) b and c together they are shorter than a
13. 6-16 =-10,-10+8=-2, she is 2 km away from her starting position
