Question

find a single discount equivalent to 25% and 4 %​

Answer 1

The formula here is:

D1 - D2 + {(-D1) x (-D2)}/100

Equivalent discount = -20 - 5 + {100/100}

= -25 + 1

= -24%

Eg: Long Method

CP= ₹100.

D1 = 20%

D2= 5%

Now,

100- (20% of 100) = 100 - 20 = ₹80 (after D1)

80 - (5% of 80) = 80 - 4 = ₹76 (after D2)

Final SP is ₹76.

OR

Equivalent discount formula 100- (24% of 100) = 100 - 24 = ₹76

Step-by-step explanation:

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Answer 2

Answer:

Let the amount /price =100

first discount =20%:20

so net price / cost = 80

next discount :5%=80*5/100=4

so final cost / price = 80-4=76

single discount equivalent : 100-76=24%

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Formula:

Equivalent discount =d1+d2-(d1*d2/100)

=20+5-

20*5/100=24%