Question

the cp of 25 speakers and 10 radios is Rs 7000.speakers are sold at 10%profit and radio at 8%profit, and total received Rs 7680 find the, find the cp of speaker and radio.​

Answer 1

Answer:

cost of speaker = 240

cost of radio = 100

Step-by-step explanation:

let the cost of each speaker is X

cost of each radio is y

sp of each speaker is (110/100) X

sp of each radio is = (108/110) y

so according to the question

25 X + 10 y = 7000. .......EQ 1

25* ( 110/100) X + 10* (108/100) y = 7680

=== (110/4) X + (108/10) y = 7680

550 X + 216 y = 153600 .......EQ 2

multiply eq 1 by 22 we get

550 X + 220 y = 154000

solving equations we get

4 y = 400

y = 100

X = 240