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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

- Quantity of toys
- 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.