Price of a cricket ball is Rs- a - b a 2- ab - Value of a and b in two consecutive years is given in the following table- array - c - c - WhineYear-lllhline2015 - a-3- b-211 hline2016 - a-4- b-3 1 hinearray What is the increase in the price of the cricket ball in rupees-A- Rs- 13B- Rs- 25C- Rs- 23D- Rs- 15

The correct option is A Rs. 13Price of the ball =Rs. (a b)(a^2+ab) In 2015, price =(3 2)(3^2+3 × 2)=1 × (9+6)=Rs. 15 In 2015, price =(4 3)(4^2+4 × 3)=1 × (16+1 ...

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Standard VI

Physics

Class I Lever

Price of a cr...

Question

Price of a cricket ball is Rs. $(a - b) (a^{2} + a b)$ . Value of a and b in two consecutive years is given in the following table.
$\begin{matrix} Y e a r 2015 & a = 3, b = 2 2016 & a = 4, b = 3 \end{matrix}$
What is the increase in the price of the cricket ball in rupees?

Rs. 13

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Rs. 25

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Rs. 15

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Rs. 23

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Solution

The correct option is A Rs. 13
Price of the ball =Rs. $(a - b) (a^{2} + a b)$
In 2015, price $= (3 - 2) (3^{2} + 3 \times 2) = 1 \times (9 + 6) = R s . 15$
In 2015, price $= (4 - 3) (4^{2} + 4 \times 3) = 1 \times (16 + 12) = R s . 28$
Increase in the price = 28 – 15 = Rs. 13

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Price of a cricket ball is Rs. (a−b)(a2+ab). Value of a and b in two consecutive years is given in the following table. Year2015a=3,b=22016a=4,b=3 What is the increase in the price of the cricket ball in rupees?

The correct option is A Rs. 13Price of the ball =Rs. (a−b)(a2+ab) In 2015, price =(3−2)(32+3×2)=1×(9+6)=Rs.15 In 2015, price =(4−3)(42+4×3)=1×(16+12)=Rs.28 Increase in the price = 28 – 15 = Rs. 13

Price of a cricket ball is Rs. $(a - b) (a^{2} + a b)$ . Value of a and b in two consecutive years is given in the following table.
$\begin{matrix} Y e a r 2015 & a = 3, b = 2 2016 & a = 4, b = 3 \end{matrix}$
What is the increase in the price of the cricket ball in rupees?

The correct option is A Rs. 13
Price of the ball =Rs. $(a - b) (a^{2} + a b)$
In 2015, price $= (3 - 2) (3^{2} + 3 \times 2) = 1 \times (9 + 6) = R s . 15$
In 2015, price $= (4 - 3) (4^{2} + 4 \times 3) = 1 \times (16 + 12) = R s . 28$
Increase in the price = 28 – 15 = Rs. 13