question number 40 to 50 please tell me tell I will mark as brainlist and follow him / her..
Answers
Answer:
40) Cp=1000
Sp= 800
Since, Cp>sp
loss =1000-800
=200
loss% = loss/cp ×100
=200/1000 ×100
= 20 %. (c)
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41) let initial avg weight be X
weight of new boy be n
No of people =6
So, total weight =6x
By question ,
(6x -20 + n)/6 = x+5
=> 6x-20+n = 6x +30
=> -20+n=30
so, n = 50 kg. (b)
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42)we know distance = speed x time
So, Time = distance /speed
By this formula,
1st case
time =10/10
=1 hr........(i)
2nd case
time = 10/20
=0.5 hr........(ii)
3rd case
time =10/30
=1/3 hr. .........(iii)
4th case
time = 10/40
= 0.25 hr ......(iv)
Total time = i + ii +iii +iv
=. 1 +0.5+1/3+0 25 hr
=2.08 approx
Distance = 40 km (given)
Avg speed = total distance /total time
=40/2.08
=19.2 km/h approx (b)
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43) area of rectangle = length x breadth
given breadth = 5
and area of rectangle =300 m^2
To find :length
so, length = area/breadth
=300/5
=60 metre (a)
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44) Let number be x
By question,
x ^2 +28^2 =1808
=> x^2 +784=1808
=> x^2 = 1024
so, x = √1024
x = 32 (c)
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45) cost per pen = 180/12
=₹15
cost per ball pen=56/8
=₹7
So ratio = cost of 1 pen : cost of 1 ball pen
= 15:7 (a)
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46) distance covererd by truck with 1 Litre diesel
= 594/108
=5.5 km
So volume of diesel required= 1650/5.5
=300L (c)
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47).
Si =(Principal x rate x time) /
= (5000 x 15/2 × 3) /
= (2500 x 15 x 3)/
= 112500/
= ₹1125 (d)
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48) let ratio 1:2:3 be 1x :2x:3x. ( x is variable constant,)
Sum of three interior angles of triangle =180°
By question,
1x+2x+3x =180
so, 6x=180
or, x=30°
1st angle = 1x = 30°
2nd angle = 2x = 2x30° = 60°
3rd angle = 3x =3x30° =90°
Ans (a)
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49). Let small no be x
so large no = x + 36
Given sum of two no=4
or,x +(x+36) = 48
=> 2x =12
or, x = 6
Small number =x = 6
Large no = x+36= 6 +36 = 42
Ans (c)
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50). 6 am ( d)
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PLEASE MARK AS BRAINLIEST
as it is highly explained and took a huge time to do it.