3
Q:

# $\inline \fn_cm 18800\div 470\div 20 = ?$

 A) 1 B) 2 C) 3 D) 4

Explanation:

Given Expression =$\inline \fn_cm \frac{18800}{470}\div 20$ =$\inline \fn_cm 40\div 20$=2

Q:

Simplify the following equation.

$\inline \frac{19}{43}+ \frac{1}{2+\frac{1}{3+\frac{1}{1+\frac{1}{4}}}}$

 A) 43/19 B) 1 C) 38/19 D) None of these

Answer & Explanation Answer: D) None of these

Explanation:

$\inline \frac{19}{43}+ \frac{1}{2+\frac{1}{3+\frac{1}{1+\frac{1}{4}}}}=\frac{19}{43}+ \frac{1}{2+\frac{5}{19}}=\frac{19}{43}+\frac{19}{43}=\frac{38}{43}$

20 1536
Q:

Simplify  $\inline \frac{(1.5)^{3}+(4.7)^{3}+(3.8)^{3}-3\times 1.5\times 4.7\times 3.8}{(1.5)^{2}+(4.7)^{2}+(3.8)^{2}-1.5\times 4.7\times -4.7\times 3.8-1.5\times 3.8}$

 A) 6 B) 8 C) 10 D) 12

Explanation:

Apply $\inline \frac{a^{3}+b^{3}+c^{3}-3abc}{a^{2}+b^{2}+c^{2}-ab-bc-ca}=a+b+c$

Hence the answer is 1.5+4.7+3.8=10

13 993
Q:

$\inline 48\sqrt{?}+32\sqrt{?}=320$

 A) 4 B) 8 C) 16 D) 32

Explanation:

$\inline 48\sqrt{?}+32\sqrt{?}=320$

$\inline \Rightarrow 6\sqrt{?}+4\sqrt{?}=40$

$\inline \Rightarrow 36\times ?+16\times ?+48\times ?=1600$

$\inline \Rightarrow 100\times ? =1600$

$\inline \Rightarrow ? =16$

5 1129
Q:

$\inline 17\frac{4}{7}+13\frac{2}{12}-?=11\frac{2}{3}$

 A) 16 B) 17 C) 18 D) 19

Explanation:

$\inline 17\frac{4}{7}+13\frac{2}{12}-?=11\frac{2}{3}$

$\inline \frac{123}{7}+\frac{275}{21}-?=\frac{35}{3}$

$\inline ?= \frac{123}{7}+\frac{275}{21}-\frac{35}{3}$

$\inline = \frac{369+275+-245}{21}=\frac{399}{21}=19$

4 900
Q:

38% of 7500 +  ?% of 375 = 50% of 6000

 A) 50 B) 40 C) 60 D) 45

$\inline \frac{38}{100}\times 7500+\frac{?}{100}\times 375=\frac{50}{100}\times 6000$
$\inline 2850+?\times 3.75=3000$
$\inline ?=\frac{150}{3.75}=40$