Question

10
i) Kirti
bought some
pencil batteries costing
7.50 each and some
torch bulbs costing 8
each, spending * 137
in all. If the number of bulbs she bought was
two-sevenths of the number of batteries, how
many of each did Kirti buy? who have power to give correct answer answer is 14 and4​

Answer 1

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student-nameIshaan Shukla asked in Math

Kirti brought some pencils batteries costing Rs.7.50 each and some torch bulbs costing Rs.8 each, spending Rs.137 in all. If the number of bulbs she bought was two-sevenths of the number of batteries, how many of each did Kirti buy?

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student-nameAakash Sharma answered this

in Math, Class

Dear Student!

Here is the answer to your query.

Let the number of pencil batteries bought be x

Then the number of torch bulbs bought

Given : The cost of1 battery = Rs 7.50

⇒ Cost of x batteries = Rs 750 x

also cost of 1 torch bulb = Rs 8

⇒ Cost oftorch bulbs =

Now Kirti spends Rs 137 in total

∴ Kirti bought 14 pencil batteries andtorch bulbs.