If you are adding the same number in a sequence, then it is arithmetic. If you are multiplying by the same number, it is geometric. Since here you are adding the same number (4), it means that the series 1 + 5 + 9 + 13 + 17 + . . is arithmetic.

8 0

4 years ago

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The marked price of a mobile set is Rs 9,600 and 40% discount is allowed to make 20% profit. By what percent is the discount to

Tanya [424]

Answer:

Step-by-step explanation:

price after discount :

9 600 - 9 600×40%

= 5760

Original price (price without profit) :

let x be the original price of the device.

x + x × 20% = 5760

Then

x = (5 760×100)÷120

= 4 800

Original price increased by 30% :

4 800 + 4 800×30%

= 6 240

the discount needed to increase the profit by 10% :

[(9 600-6 240)÷9 600]×100

= 35%

Then

to increase the profit by 10% ,we have to reduce

the percent of discount to :

40% - 35%

= 5%

7 0

2 years ago