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If 15 Toys Cost Rs 234, What Do 35 Toys Cost?

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Explanation

  • If 15 toys cost Rs 234.
  • The cost of 35 toys can be figure out in this way.

Two given entities here are

  1. Quantity of toys
  2. Cost
  • Cost increases as the quantity of toys increases.
  • Cost decreases as the quantity of toys decreases.

This clearly indicates that there is direct relation.

Direct/Indirect relation tells how the equation will be written.

15/35 = 234/y

This equation gives the cost of 35 toys (Rs. 546).

To Find

Cost of 35 toys = ?

Solution

Method I

Let suppose cost of 35 toys = y

Toys                              Cost

15                                  234

35                                  y

As, there is direct relation so;

15/35 = 234/y

15y = 35 x 234

15y = 8190

y = 8190/15

y = 546

Cost of 35 toys = Rs. 546 answer

Method II

Cost of 15 toys = 234

Cost of 1 toy = 234/15 = 15.6

Cost of 35 toys = 15.6 x 35 = 546

Cost of 35 toys = Rs. 546 answer

Conclusion

If 15 toys cost Rs 234, the cost of 35 toys will be Rs. 546.

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