THIS QUESTION IS FOR 35 POINTS
Assignment for the day :
1. Increase 100 in the ratio 5:8.
2. Decrease 850 in the ratio 17:6 and the decrease the resulting number in the ratio 4:3.
3. The number 800 is increased to 960 in the ratio a:b, find the ratio a:b.
4. The ages of A and B are in the ratio 6:4, If B's age is 18 years , find the age of A.
5. State true of False:
1. A ratio equivalent to 7: 9 is 27:21
2. A ratio equivalent to 5:4 is 240:192
3. A ratio of 250 gm and 3kg is 1:2
Answers
Answer:
1)8:5=100:X
=>8×x=100×5
=>8×x=500
=>X=500/8
=62.5
2)given quantity= 850 and decrease in the ratio = 17:6
the decrease quantity =6/17×850=300
Now, the quantity is decreased again in ratio 4:3
the resulting quantity=3/4×300=225
3)the given quantity is =600
and increased quantity=960
the ratio (a:b) by which 800 is increased to 900=800/960=5/6
the resulting ratio = 5:6
4)the ratio in ages of A and B =5:6
A age =18
B=? years
6:5=18:x
6/5=18/X
6×X=18×X
X=18×5/6 =15
B age is = 15 years
5) False
1)correct answer is 9:7
2)True
3)True
Step-by-step explanation:
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Answer:
5.
a. false
b. true
c. true