Question

if 24 apples cost rs. 300, find the cost of 15 apples.

Answer 1

Answer:

y=the cost of 28 apples

Sufficient Condition(s): 12 apples cost Rs 30

CALCULATIONS

The expression a/b:c/d can be used to denote proportions of similar variables:

y=Rs 30/12: Rs x/28

(Rs 30)(28)=( x)(12)

Rs 840=( x)12

Rs 840/12=[(x)12]/12

x=Rs 70

PROOF

If y=Rs 70, then the equations

(Rs 30/12)28=Rs 70

(Rs 2.5)28=Rs 70 and

Rs 70=Rs 70 establish the root (zero) x=Rs 70 of the expression Rs 30/12: Rs x/28

C.H.

Answer 2

Step-by-step explanation:

The cost of 24 apples = rs 300

The cost of one apple = 300 ÷ 24 = rs 12.5

hence,the cost of 15 apples = 12.5 × 15

= rs 187.5 (ANS)