Question

(1) He jumps 3 steps down and then jumps back 2 steps up.
In how many jumps will he reach the water level?​

Answer 1

Answer:

1st jump 1+3=4th\ step1+3=4th step

2nd jump 4-2=\ 2nd\ step\4−2= 2nd step 

3rd jump 2+3=5th\ step\2+3=5th step 

4th jump 5-2=\ 3rd\ step\5−2= 3 r d step 

5th jump 3+3=6th\ step3+3=6th step

6th jump 6-2=4th\ step6−2=4th step

7th jump 4+3=7th\ step\4+3=7 t h step 

8th jump 7-2\ =\ 5th\ step\7−2 = 5th step 

9th jump 5+3=\ 8th\ step\5+3= 8 t h step 

10th jump 8-2=\ 6th\ step\8−2= 6th step 

11th jump 6+3=\ 9th\ step\6+3= 9 t h step 

he will reach 9th step in 11th jumps.

(ii) 1st jump = 9-4=\ 5th\ step\9−4= 5th step 

2nd jump = 5+2=\ 7th\ step5+2= 7 t h step

3rd jump = 7-4=\ 3rd\ step\7−4= 3 r d step 

4th jump = 3+2=\ 5th\ step\3+2= 5th step 

5th jump = 5-4=\ 1st\ step\5−4= 1 s t step 

he reach back on the first step in fifth steps.

(iii)

(a) -3+2-3+2-3+2-3+2-3+2-3+2-3+2-3+2=\ -8−3+2−3+2−3+2−3+2−3+2−3+2−3+2−3+2= −8

(b) 4-2+4-2+4-2+4-2=\ 84−2+4−2+4−2+4−2= 8

thus, sum 8 in (b) represents going up by eight steps.

Step-by-step explanation:

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