92613 x 62742241 = ? + 89 Find the value of '?'

Correct Answer: 121

Explanation:

Let the score be x. Then the highest score = 3x/11.

Reminder = (x - 3x/11) = 8x/11 .Next the highest score = 3/11 of 8x/11 = 24x/121.

3x/11 - 24x/11 = 9 <=> 33x - 24x = 9*121 <=> x= 121..

Correct Answer: 10

Explanation:

Apply  a 3 + b 3 + c 3 - 3 a b c a 2 + b 2 + c 2 - a b - b c - c a = a + b + c

 

Hence the answer is  1.5 + 4.7 + 3.8 = 10.

Correct Answer: 200

Explanation:

Let the number  of 20 paise coins be x. Then the no of 25 paise coins = (324 - x).

0.20 * (x) + 0.25 (324 - x) = 71 => x = 200..

Correct Answer: 300

Explanation:

37 1 2 = 75 2

Required number =   75 2 1 8 = 75 x 4 = 300

Correct Answer: 175

Explanation:

Suppose the man works overtime for x hours.

Now, working hours in 4 weeks = (5 x 8 x 4) = 160.

Therefore,  160 * 2.40 + x * 3.20 = 432

 => 3.20x = 432 - 384 = 48

 => x = 15.

 Hence, total hours of work = (160 + 15) = 175.

Correct Answer: 70000

Explanation:

$$\begin{gathered} 112 × 5 4 \\ 112 × 10 2 4 \\ = 112 × 10000 2 4 \\ = 1120000 / 16 \end{gathered}$$

= 70,000.

Correct Answer: 12

Explanation:

Let the number of buffaoes be x and number of ducks be y.

Then 4x + 2y = 2(x + y) + 24  

=> 2x = 24

=> x = 12.

Correct Answer: 1134

Explanation:

$$\begin{gathered} 1 3 x ? + 4 7 x 11 4 x 539 = 31 100 x 2000 \\ ? = 378 x 3 \\ ? = 1134 \end{gathered}$$

Correct Answer: 6

Explanation:

$$\begin{gathered} ? 2 = 2 × 7 8 - 21 + 8 + 49 - 14 8 \\ = 57 - 21 \\ = 36 \\ = > ? = ± 6 \end{gathered}$$

Correct Answer: 90

Explanation:

3/5 of  350 - 4/7 of 210 = 210 - 120 = 90.