Question

Anastasia is grocery shopping with her father and wonders how much shopping is left to do. "We already have 60\%60%60, percent of the items on our list," her father says. Anastasia sees 121212 items in the cart.
How many grocery items are on the list?

Answer 1

Answer:

If they already have 60%(12items) of the items have in their cart then the remaining 40% makes up the other 8 items.

60%=(12/x) ×100

60x=12×100

x=1200/60

x=20

There are 20 items on their grocery list.

Answer 2

• Total grocery items on the list are equal to 20 .

Given :-

• Already have on the list = 60% of the items .
• Anastasia sees items in the cart = 12 items .

To Find :-

• How many grocery items are on the list ?

Solution :-

Let us assume that, total grocery items on the list are equal to x .

So,

→ Anastasia and her father bought items = 60% of x ------ Equation (1)

and,

→ Bought items in the cart = 12 ------- Equation (2)

therefore,

→ Anastasia and her father bought items = Bought items in the cart

→ Equation (1) = Equation (2)

→ 60% of x = 12

→ (60/100) × x = 12

→ 60 × x = 12 × 100

dividing both sides by 12,

→ 5 × x = 100

dividing both sides by 5,

→ x = 20 items (Ans.)

Shortcut method :-

Since total items in % are equal to 100% .

So,

→ 60% of items is equal to = 12

→ 1% of items is equal to = (12/60)

→ 100% of items is equal to = (12/60) × 100 = (1/5) × 100 = 20 items (Ans.)

Hence, there are 20 grocery items on the list .

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