Question

If 15 oranges cost * 35, what is the cost of 39 oranges?​

Answer 1

★ Concept :-

• Here, We need to find the cost of 39 oranges.

• To find the cost of 39 oranges we need to apply this method ↓

• Product of means = Product of extremes.

Correct question :-

If 15 oranges cost 35 rupees/dollars , what is the cost of 39 oranges?

Answer :-

• The cost of 39 oranges is 91 rupees/dollars.

Given :-

• 15 Oranges cost 35 rupees/dollars.

To find :-

• The cost of 39 oranges?

Solution :-

Let us assume the cost of 39 oranges as X.

➟ Product of means = Product of extremes.

➟ 15 : 35 : : 39 : x

➟ 15 × x = 35 × 39

➟ 15x = 1,365

➟ x = $\bf \dfrac{1365}{15}$

➟ x = 91

Verification :-

➟ 15 : 35 : : 39 : x

• By replacing 91 in place of X , We get :-

➟ 15 : 35 : : 39 : 91

➟ 15 × 91 = 35 × 39

➟ 1,365 = 1,365

Hence, Verified.

Therefore, The cost of 39 oranges is 91 rupees/dollars.

Answer 2

Answer:

Cost of 15 oranges =Rs 70

So,cost of 1 orange=70/15=14/3

Therefore,cost of 39 oranges=(14/3)× 39

=14×13. (since 39÷3 is 13)

=182

Thus,the cost of 39 oranges is Rs 182..