ganita manjari part 2 chapter 10 question answer

Piyush365

Asked: October 5, 2026In: Class 9 Maths

A farm has some cows, sheep and chickens. Last year the cows made up 60%, the sheep 25% and the chickens 15%. There was a decrease in the number of all three animals’ population over the year. Choose the possibilities for the change in their respective shares of the population— (i) % of cows decreased, % of sheep decreased, % of chickens decreased (ii) % of cows increased, % of sheep increased, % of chickens increased (iii) % of cows remained the same, % of sheep remained the same, % of chickens remained the same (iv) % of cows decreased, % of sheep increased, % of chickens remained the same (v) % of cows increased, % of sheep increased, % of chickens decreased.

Possibilities (iii), (iv) and (v) are possible. The sum of percentage shares must always equal 100%, so all shares cannot simultaneously increase or simultaneously decrease together, ruling out (i) and (ii). Class 9 Ganita Manjari Part 2 Chapter 10 Solutions Class ...

Virat

Asked: October 3, 2026In: Class 9 Maths

Look at the following graph. What do you notice? What do you wonder? Write your inferences.

Movement and sensory disabilities dominate across all age groups. Seeing and hearing disabilities increase significantly among the elderly, while speech and developmental disabilities are more prominent in younger groups. CBSE released Class 9 Ganita Manjari Part 2 book and Solutions Class ...

Virat

Asked: October 3, 2026In: Class 9 Maths

Given some data with corresponding weights, how would the weighted average change if all the weights are doubled? If required, experiment with some data. What do you observe? Justify your answer using algebra.

The weighted average does not change. Doubling every weight scales both the numerator and denominator by 2, which cancel out completely, keeping the overall average strictly identical. Class 9 Ganita Manjari Part 2 All Chapter Solutions Class 9 Ganita Manjari Part ...

Piyush365

Asked: October 1, 2026In: Class 9 Maths

In cricket, the run rate is the average number of runs scored per over. In a T20 match, a team scored 6 runs in the first over making the run rate 6. (i) In the second over they scored 12 runs. What is the run rate now? (ii) After Over 19, their run rate was 6. What is the run rate after 20 overs given the team made 12 runs in the last over?

(i) Total runs are 6 + 12 = 18 over 2 overs, giving a run rate of 9. (ii) Total runs are (19 × 6) + 12 = 126; dividing by 20 gives a run rate of 6.3. Ganita Manjari Part ...

Piyush365

Asked: September 29, 2026In: Class 9 Maths

At a panipuri (golgappa) stall, the concentration of spice in the pani (spiced water) was 8%. Many customers complained that it was too spicy. What quantity of regular water should be mixed into the 10 litres of pani so that the spice level is reduced to 3/4th of the original concentration?

The target concentration is 6% (three-fourths of 8%). The original 10 litres contain 0.8 litres of spice. Dividing 0.8 by 0.06 gives 13.33 litres total, requiring 3.33 litres (or 10/3 litres) of added water. Class 9 Maths Ganita Manjari Part 2 ...

Look at the following graph. What do you notice? What do you wonder? Write your inferences.

Given some data with corresponding weights, how would the weighted average change if all the weights are doubled? If required, experiment with some data. What do you observe? Justify your answer using algebra.

At a panipuri (golgappa) stall, the concentration of spice in the pani (spiced water) was 8%. Many customers complained that it was too spicy. What quantity of regular water should be mixed into the 10 litres of pani so that the spice level is reduced to 3/4th of the original concentration?

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