Aman bought some secondhand furniture for 2/3 of what it cost new. he paid $400 for it. how much did it cost new?

$600

Step-by-step explanation: The $400 is 2 portions of an original 3 of the new piece of furniture.  Each "portion" is $200 ($400 divided by 2).  So all 3 portions of the new item is $600 ($200 x 3)

$450.00 for 6 weeks

or

$300

step-by-step explanation:

$200.00 for first week $50.00 x5 equals $250 plus $200 equals $450.00 for six weeks.

$200 for first week

$200 x 0.10 = $20

$20 x 5 = $100

$200 + $100 = $300

answer: 1722

step-by-step explanation:

given: the mass of saturn=

the mass of mercury=

the number of times the mass of saturn is greater than the mass of mercury

hence, the mass of saturn is 1722 times greater than the mass of mercury.