Ireally need !
machine a can fill a bucket from a pipe in 4 minutes. however, machine b can empty the bucket in 6 minutes. starting from empty, if the machines are going at the same time, how long will it take to fill the tank?

5/12

Step-by-step explanation:

1/4 + 1/6 =

3/12 + 2/12 =

5/12

13. jbhgfsfyfvhvbjko

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true