Intelligent Consumer

Let the cost of one Orange be $x$ .

Now money spend on buying 3 Oranges = $3x$ and in return you are getting 4 Oranges

$\therefore$ cost of one Orange = $\frac{3x}{4}$

And similarly the cost of 1 Orange which comes out from B Option is = $\frac{7x}{10}$ .

Now Comparing the costs $\frac{3x}{4}$ $>$ $\frac{7x}{10}$ .

Hence Offer A is more costlier than Offer B.

Therefore the Buyer should choose $\large \boxed{\text {Offer B} }$

We can buy 20 oranges either:

• for the price of 15 ( Offer A, 5 × (3 + 1) = 20)

or

• for the price of 14 ( Offer B, 2 × (7 + 3) = 20)

$\text {Hence, our answer should be: } \boxed { \text { Offer B}}$

(That is, if the oranges are basically identical (same size/variety/quality) and the calculated unit prices (based on just 3 and 7 oranges, (without the free ones) are also identical at the two offers. Also, if we need the number of oranges to be a multiple of 10. (So B might not be the best offer if e. g. we only need 5 oranges.) Otherwise, we don't have enough information to determine, which offer is the better.)

offer a $3 - 1 =1$ so we know offer a save 1 orange

offer b $7 - 3=5$ offer b save 5 orange and know u know the answer is $\boxed{b}$