Question

Solve the following:-
1. Cheak whether or not the following ratios form a proportion:-
a) 32:40 and 24:30.
b) 15:25 and 49:63

2. Find the value of missing term x in the following proportion:-
a) 15:x :: 45:75
b) 7:x ::x:28

3. Simplify the given ratios:-
a) 2/15 : 7/45
b) 1₁ /7 : 2²/5

4. Find the ratio of the following:-
a) 40 minutes to 2.5 hours
b) 88 gms to 0.64 kg

5. The price of 12m cloth is ₹720. Find the cost of 8m of cloth.​​

Answer 1

Answer:

i will answer

Step-by-step explanation:

question 1:-

in (a) both ratios are proportional to each other

in (b) both ratios are not proportional to each other

question 2:-

in (a) product of means is equals to product of extremes

45x=1125

x=1125/45

=25

in (b) product of means is equals to product of extremes

x^2=196

x=14

question 3:-

in (a)

a:b and a/b will have same meaning

so (2/15)/(7/45)

finally if you solve you get 6/7 or 6:7

in(b) follow same method mentioned in answer

question 4:-

convert all into either minutes or seconds in (a)

and grams or kgs in(b)

question 5:-

for 12m cost is 720

for 1m cost is

720/12

60

for 8m

60(8)

480