Sally's Soda company makes $1.20 for each can of soda sold out of a machine. If the company makes $144, how many cans of soda were sold?

120 cans of soda were sold

Step-by-step explanation:

Sally's Soda company makes $1.20 for each can of soda sold out of a machine. If the company makes $144, how many

cans of soda were sold?

144 ÷ 1.20 = cans sold

144 ÷ 1.20 = 120

check your work

120 x 1.20 = 144

21 students have both a dog and a cat as pets.

Step-by-step explanation:

Total students in the class = 45

Fraction of students having dog as a pet =

Number of students having dos as  a pet ,D=

Fraction of students having dog as a cat as a pet=

Number of students having dos as a pet ,C=

Students having both cat and dog as a pet = D∪C

D∪C  = 45

D∪C = D + C - D∩C

45 = 36+ 30 - D∩C

D∩C = 66 - 45 = 21

21 students have both a dog and a cat as pets.