Question

A survey showed that the colour of cars chosen by people silver, white and black were in the ratio of 7:4:2 respectively. if a dealer has sold 1300 cars in a year. how many cars of each colour did he sell?​

Answer 1

Answer:

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Let ,

No of Silver Car's be 7x

No of white Car's be 4x

No of black car's be 2x

☆ According to the question

=> 7x + 4x + 2x = 1300

=> 13x = 1300

=> x = 100

Then,

Silver cars = 7 × 100 = 700

White cars = 4 × 100 = 400

Black cars = 2 × 100 = 200

Answer 2

Answer:

Total number of cars = 1300

Ratios of cars = 7 : 4 : 2

Sum of ratios = 7+4+2 = 13

Number of silver cars = 7/13 × 1300

= 7×100 = 700

Number of white cars = 4/13 × 1300

= 4×100 = 400

Number of black cars = 2/13 × 1300

= 2×100 = 200

Silver cars = 700

White cars = 400

Black cars = 200