Question

The cost of the table and chair is in the ratio 5:7,cost of the chair and table is increased by 20%and 10% respectively. Then what will be the new ratio?

Answer 1

new ratio of table:chair = 55:84

Answer 2

The new ratio would be 60:77.

Step-by-step explanation:

Since we have given that

Cost of table and chair is in the ratio 5:7

Cost of table is increased by 20%

Cost of chair is increased by 10%.

So, it becomes,

$5\times \dfrac{100+20}{100}:7\times \dfrac{100+10}{100}\\\\=5\times \dfrac{120}{100}:7\times \dfrac{110}{100}\\\\=5\times 1.2:7\times 1.1\\\\=6:7.7\\\\=60:77$

Hence, the new ratio would   be 60:77.

# learn more:

The cost of a table and a chair are in the ratio of 5 : 7. If the cost of chair and table is increased

by 20% and 10% respectively, then what will be the new ratio?

1) 16:17

2) 55:84

3) 60:77

4) None of these​

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