Question

Can someone please help.

Mall produces strawberry jam for several food shops. She uses big jars to deliver the jam to the shops. One time she distributed 80 liters of jam equally among the jars. She decided to save 4 jars and to distribute jam from these jars equally among the other jars. She realized that she had added exactly of the previous amount to each of the jars. How many jars did she prepare at the start?

Answer 1

• 8 jars

Explanation:

Let the number of jars is x.

80 liters distributed, each jar has:

• 80/x

Redistribution with 4 less jars, each jar now has:

• 80/(x - 4)

Each jar has now twice the amount:

• 80/x*2 = 80/(x - 4)
• 2/x = 1/(x - 4)
• 2(x - 4) = x
• 2x - 8 = x
• x = 8

She prepared 8 jars at the start