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 If total cost of four tube lights and three bulbs is Rs.260 and the ratio between the cost of a tube light and a bulb is 5:2 respectively, what is the total cost of one tube light and six bulbs?

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 If total cost of four tube lights and three bulbs is Rs.260 and the ratio between the cost of a tube light and a bulb is 5:2 respectively, what is the total cost of one tube light and six bulbs?

A). 150 Rs.

B). 160 Rs.

C). 170 Rs.

D). 180 Rs.


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Answered by on | Votes 0 |

170 Rs.



Let the cost of 1 tube light = 5x and that 1 bulb = 2x.

Given 4 X 5x + 3 X 2x = Rs.260

26x = Rs.260. :.x = 10.

:. Cost of 1 tube light = Rs.50.

Cost of 1 bulb = Rs.20

:. 1 tube light + 6 bulbs = 50 + 6 x 20= Rs.170.

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