the original cost is "x", which is the 100% of the original price, and we also know that €336 is its price increased by 40%, namely 100% + 40% = 140%, so

Answer:
Step-by-step explanation:
she wrote it to solve the total amount spent on both T shirt.
30+6x=20+8x-8x
30+6x-8x=20
30-30-2x=20
-2x=20-30
-2x/-2=-10/-2
<u>x=5</u>
Fifteen increased by a number
The decimal number is 0.9