reneewilliams20
16.04.2021 •
Mathematics
Katie made desserts for a bake sale at her school. At the bake sale, she sold 5 brownies and 15 cookies. What percent of the desserts that Katie sold were cookies? Please help me .
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Ответ:
6
+
4
)
(
9
y
12
−
12
y
6
+
16
)
=
(
3
y
6
+
4
)
(
9
y
12
+
−
12
y
6
+
16
)
=
(
3
y
6
)
(
9
y
12
)
+
(
3
y
6
)
(
−
12
y
6
)
+
(
3
y
6
)
(
16
)
+
(
4
)
(
9
y
12
)
+
(
4
)
(
−
12
y
6
)
+
(
4
)
(
16
)
=
27
y
18
−
36
y
12
+
48
y
6
+
36
y
12
−
48
y
6
+
64
=
27
y
18
+
64