Question

PLEASE SOLVE WITH STEPS AND I WILL MARK THE BRAINLIEST
1. There are 100 students in a hostel. Food provision for them is for 20 days. How long will these provisions last, if 25 more students join the group?
2. Write the standard form of 0.00001275.
3. What is the value of 'm' in 6m/ 6-3 = 65?
4. A cuboid is of dimensions (60*50*30)cm.How many small cubes with side 6 cm can be placed in the given cuboid?
5. Find the height of a cuboid whose base area is 180 cm2 and volume is 900 cm3.
6. The reciprocal of the reciprocal of a number is _________.

Answer 1

Answer:

1st ka 16 days

2nd Ka 1.275×10^–5

3rd Ka 32.5

4th ka 417

5th Ka 5cm

6th Ka same number

Answer 2

Answer:

no. of student. days

100. 20 |

125. x ↓

=> 100:20::125:x(since it is inversely proportional )

=> 100:125::20:x

[note ;in inversely proportional we change the place]l

=>100/125=20/x

=>20*100/125=x

=>x = 16 days

2.

standard for of 0.00001275=1.257×10^(-5)

3.

=>6m/6-3=65

=>6m/3=65

=>2m=65

=>m=65/2=32.5

the value of m is 32.5

4.

the dimensions of the cuboid are 60,50,30 cm

we know that

Area of cuboid = 2(lb+bh+hl)

= 2(3000+1800+1500)cm^2

=2*6300=12600cm

side of the small cube =6 cm

so area of the small cube= 6*a^2

=6*6^2

=216cm^2

therefore the no. of cube = 12600/216

=100 cubes

5.

area of the base (l*b)=180

let height be "h"

volume =900

=>l*b*h=900

=>180*h =900

=>h=900/180

=>h=5 cm

6.

the answer is one diveded by the number

hope it helps you

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