1)

If 15 toys cost Rs. 234, what do 35 toys cost ?


A) 440

B) 546

C) 650

D) 720

Answer:

Option B

Explanation:

Let the required cost be Rs. $x$. Then,

More toys, More cost (Direct Proportion)

$\therefore 15:35::234:x$

$(15\times x)=(35\times 234)$   

$x=\frac{35\times 234}{15}$ $= 546$.

Hence, the cost of 35 toys is Rs. 546.