Syntel Company Numerical Ability Ratio and Proportion

Zinc and copper are melted together in the ratio 9 : 11. What is the weight of melted mixture, if 28.8 kg of zinc has been consumed in it?
1. 58 kg
2. 80 kg
3. 64 kg
4. 90 kg

Read Solution (Total 2)

given ratio is 9:11
weight of zinc is also given as 28.8
then from ratio9:11,we get,(9/20)*X=28.8
X=(28.8*20)/9
=64KG
10 years agoHelpfull: Yes(9) No(1)

28.8x/y=9/11
9y=316.8
y=35.2
so by adding weight of zinc and copper: 28.8 + 35.2 =64
10 years agoHelpfull: Yes(7) No(2)

Syntel Other Question

The ratio of the incomes of A and B is 5 : 4 and the ratio of their expenditures is 3 : 2. If at the end of the year, each saves Rs. 1600, then the income of A is:
1. Rs. 3800
2. Rs. 4800
3. Rs. 4000
4. Rs. 4500 The compounded ratio of (2 : 3), (6 : 11) and (11 : 2) is:
1. 7 : 2
2. 2 : 1
3. 11 : 24
4. 58 : 121