1 of 8 0-day streak

Model rational quantities, percentage changes and financial outcomes

Question 1 of 8

Calculator allowed

The original quantity is 224 $. First decrease it by 25%, then decrease the resulting quantity by 20%. Apply the second percentage to the updated quantity

All quantities and rates are exact. Keep every intermediate quantity exact; no rounding is needed or permitted in this model

(a)1 mark

Determine the quantity after the first change using the stated bases

Use the updated quantity as the base of the second change when needed

Give the exact result in $; do not round

Quantity after the first change ($) Format: Enter an exact integer or decimal, without rounding

(b)1 mark

Determine the final quantity after both changes using the stated bases

Use the updated quantity as the base of the second change when needed

Give the exact result in $; do not round

Final quantity after both changes ($) Format: Enter an exact integer or decimal, without rounding

Determine the signed net percentage change using the stated bases

Use a negative answer for a loss or decrease and zero for no net change

Give the exact result in %; do not round

Signed net percentage change (%)

Format: Enter an exact integer or decimal or fraction in simplest form, without rounding