Question
Download Solution PDFThe ratio of the price of a mobile and a speaker is 5 : 2. The average price of two mobiles and a speaker is Rs. 20000. The total sum of the price of a mobile and a speaker is –
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Ratio of the price of a mobile and a speaker is 5 : 2
Average price of two mobiles and a speaker is Rs. 20000
Formula Used:
Average = (sum of all the observations)/(total number of observations)
Calculation:
Let the price of a mobile and a speaker be Rs. 5M and Rs. 2M respectively.
According to the question,
Average price of two mobiles and a speaker is Rs. 20000
⇒ (2 × 5M + 2M)/3 = 20000
⇒ 10M + 2M = 60000
⇒ M = 5000
⇒ Price of a mobile = 5 × 5000 = Rs. 25000
⇒ Price of a speaker = 2 × 5000 = Rs.10000
∴ Required sum = 25000 + 10000 = Rs. 35000
Last updated on Jun 17, 2025
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