Question

Cost of 1 mango is 3 times the cost of 1 Orange. Rishikesh bought 4 mangoes and 4 oranges. The total amount spent is 320 Rupees. What is the cost of 1 orange?

• A. 20 rupees
• B. 60 rupees
• C. 100 rupees
• D. 40 rupees

Answer 1

The correct option is A

20 rupees

Let the cost of 1 orange be 'x'

Cost of 1 mango = 3x.

Rishikesh bought 4 mangoes and 4 oranges.

Cost of 4 oranges = 4 $\times$ $x$ = 4x.

Cost of 4 mangoes = 4 $\times \left(3x\right)=12x$

(Cost of 4 oranges) + (Cost of 4 mangoes)

= 4x + 12x

= 16x

It is given that 16x = 320

16x = 320

$x=\frac{320}{16}\Rightarrow x=20$

Cost of 1 orange = x = 20 Rupees.