Test:
Ratio - Challenging
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Question 1:
Find the unknown number
$\frac{3}{8}=\frac{a}{24}$
A
$64$
B
$9$
C
$\frac{1}{9}$
D
$\frac{1}{24}$
Question 2:
Find
$x$
if
$8:x=12:3$
A
$1$
B
$\frac{1}{2}$
C
$4$
D
$2$
Question 3:
Find the
$x$
term
$\frac{1}{3}:5=x:15$
A
$\frac{1}{3}$
B
$1$
C
$3$
D
$\frac{1}{5}$
Question 4:
Find the
$x$
term
$\left(5x-6\right):12=2:3$
A
$\frac{5}{14}$
B
$28$
C
$0.28$
D
$2.8$
Question 5:
Find the
$a$
term:
$\frac{1.8}{7-a}=\frac{0.75}{30}$
A
$\frac{1}{65}$
B
$-65$
C
$0.65$
D
$65$
Question 6:
There are
$50$
grams of salt in
$2$
liters of a solution. How much salt is in
$9$
liters of such solution?
A
$2.25g$
B
$2250g$
C
$22.5g$
D
$225g$
Question 7:
Find
$x$
in the proportion
$\frac{0.1x+6}{3.5}=\frac{4}{5}$
A
$3.2$
B
$32$
C
$-3.2$
D
$-32$
Question 8:
$12\%$
of sugar is extracted from a sugar beet. How much beet is required to extract
$16.8$
kilograms of sugar?
A
$1400kg$
B
$140g$
C
$140kg$
D
$1.4kg$
Question 9:
Express the number
$36$
as a ratio of two numbers:
$2$
and
$4$
.
A
$12:24$
B
$10:26$
C
$30:6$
D
$18:18$
Question 10:
A distance between two cities is
$120$
km. What is the distance between two cities on a map with a scale
$1:2000000$
?
A
$60cm$
B
$6cm$
C
$16cm$
D
$0.6cm$
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