mani sold his laptop at 3/5th of the price at which he bought it. What is the percentage loss that mani made?

40%

Step-by-step explanation:

3/5th of the price
if price = 100
then 3/5 is like 60/100
(multiplying by 20)
so 60/100 is 60%
mani sold his laptop for $60 that if his laptop was $100
he lost $40
which is the same value for 40/100

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.

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step-by-step explanation: