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how to solve with mathtical statement and model

how to solve with mathtical statement and model

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May-02-2018
first, we see how many boxes of 12 she can buy:250÷32=7.8 (max 7 boxes)7×32 =224250-224 = 2626÷10.9 = 2.4 (max 2 boxes)total number of tarts = (7×12) + (2×4) = 92answer 92
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2 days ago
GUIDE: express number of cards bought on 5th day in 2 ways, then solve
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4 weeks ago
If you rotate the shaded triangle, there will be a point when all the 3 corners of that triangle touches the outer big triangle.From that we can deduce the area of the big triangle is 4 times that of the shaded triangle.So area of unshaded  part is 34Ans:( 3)
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Apr-25-2018
Perimeter of shaded area = length of (outer big semicircle + inner small semicircle + 7 + 7)Length of big semicircle =12 (2πr) = 227× 21 = 66cmLength of big semicircle =12 (2πr)  = 227×14 = 44cmSo Perimeter of shaded area =66 + 44 + 7 + 7 = 124cm (ans)
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Mar-03-2018

 $\frac{1}{2}$12  $\frac{1}{4}$14  + $\frac{1}{8}$18  

=  $\frac{4}{8}$48  +  $\frac{2}{8}$28  +  $\frac{1}{8}$18  

=  $\frac{7}{8}$78  

She spent  $\frac{7}{8}$78  of her money

 

1 -  $\frac{7}{8}$78  =  $\frac{8}{8}$88  -  $\frac{7}{8}$78  =  $\frac{1}{8}$18  

 $\frac{1}{8}$18  ×200 = 25

She was left with $25 

 

 

 

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Feb-06-2018

  $\frac{2}{10}$210  $\frac{3}{5}$35  

=  $\frac{2}{10}$210  + $\frac{6}{10}$610  

=  $\frac{8}{10}$810  

$\frac{4}{5}$45  

  

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Feb-04-2018

Total households = H

Households with 1 car = $\frac{1}{4}$14  H =  $\frac{4}{16}$416  H

Households with 2 cars = $\frac{7}{16}$716  H

Households with 3 cars = $\frac{1}{8}$18  H =  $\frac{2}{16}$216  H

Ans (a):

Fraction of household with no cars = 1 - $\frac{4}{16}$416  -  $\frac{7}{16}$716   -  $\frac{2}{16}$216  =  $\frac{3}{16}$316  

Ans (b):

Total cars =  $\frac{4}{16}$416  H (1) +  $\frac{7}{16}$716  H (2) +  $\frac{2}{16}$216  H(3) +  $\frac{3}{16}$316  H(0) = 1680

$\frac{24}{16}$2416  H = 1680

H = 1120

No of households with 0 cars =  $\frac{3}{16}$316  (1120) = 210

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Jan-06-2018

A) Area of triangle =  $\frac{1}{2}$12  ×10cm×24cm = 120 $cm^2$cm2 

B) 2 triangles form a rectangle with length 24cm and breadth 10cm

100÷24 = 4 R4 

60÷10 =6

Number of rectangles that can be cut = 4 ×6 =24

Number of triangles that can be cut = 24×2= 48

 

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Nov-11-2017

  $\frac{4}{9}$49  ×  $\frac{3}{12}$312   =  $\frac{12}{108}$12108   =  $\frac{1}{9}$19  

 

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Oct-15-2017

All         |_____________________| 419 toys

Jayden  |__| 50 toys

Jame     |____| 1U toys

Eheh     |____|____| 2U toys

Jayden + Jame + Eheh = 419

50 + 1U + 2U = 419

3U = 369

U = 369 ÷ 3 = 123 

Ans: So Jame have 123 toys

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